Ultra-hard Coatings
The research group “Ultra-hard coatings” investigates PVD and CVD coatings with special focus on crystalline CVD-Diamond layers. The successful research work enabled the founding of a company called DiaCCon in Fürth, Germany in 2002 (http://www.diaccon.de).
Authored Books
- :
Final Report of the Bavarian Joint Research Program on Surface Technology, Second Phase (FOROB II)
Erlangen: Eigenverlag, 2001
URL: http://www.abayfor.de/forob2
Journal Articles
- , , , , , , , :
Chemical structure dependent electrochemical degradation of antibiotics using Boron-doped Diamond Electrodes
In: Journal of Environmental Chemical Engineering 12 (2024), Article No.: 114115
ISSN: 2213-3437
DOI: 10.1016/j.jece.2024.114115 - , , , , , , , , , , , , , , :
Continuous Production of Ethylene and Hydrogen Peroxide from Paired Electrochemical Carbon Dioxide Reduction and Water Oxidation
In: Advanced Energy Materials (2024)
ISSN: 1614-6832
DOI: 10.1002/aenm.202304247 - , , , , , :
Diamond as Insulation for Conductive Diamond—A Spotted Pattern Design for Miniaturized Disinfection Devices
In: C – Journal of Carbon Research 9 (2023), Article No.: 78
ISSN: 2311-5629
DOI: 10.3390/c9030078 - , , , , , :
Spatial distribution of thermally induced residual stresses in HF-CVD diamond coatings on microstructured steel surfaces
In: Diamond and Related Materials 136 (2023), Article No.: 109931
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2023.109931 - , , , , :
Effect of electrode parameters in the electro-production of reactive oxidizing species via boron-doped diamond under batch mode
In: Water Environment Research 94 (2022)
ISSN: 1061-4303
DOI: 10.1002/wer.10830 - , , , , , , :
Preclinical Testing of Boron-Doped Diamond Electrodes for Root Canal Disinfection—A Series of Preliminary Studies
In: Microorganisms 10 (2022), Article No.: 782
ISSN: 2076-2607
DOI: 10.3390/microorganisms10040782 - , , , , , , , , :
Root Canal Obturation by Electrochemical Precipitation of Calcium Phosphates
In: Applied Sciences 12 (2022), Article No.: 2956
ISSN: 2076-3417
DOI: 10.3390/app12062956 - , , , , :
Carbonate-Induced Electrosynthesis of Hydrogen Peroxide via Two-Electron Water Oxidation
In: Chemsuschem (2022)
ISSN: 1864-5631
DOI: 10.1002/cssc.202102137 - , , , , , , :
Bioinspired damage tolerant diamond-metal laminates by alternating CVD and PVD processes
In: Materials & Design 213 (2022), Article No.: 110315
ISSN: 0264-1275
DOI: 10.1016/j.matdes.2021.110315 - , , , , , , , :
Avoiding Pitfalls in Comparison of Activity and Selectivity of Solid Catalysts for Electrochemical HMF Oxidation
In: ChemistryOpen 10 (2021), p. 600-606
ISSN: 2191-1363
DOI: 10.1002/open.202100072 - , , , , , :
A simple way to make tough diamond/metal laminates
In: Journal of the European Ceramic Society (2021)
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2021.03.055 - , , , , , , , :
Effective Hydrogen Peroxide Production from Electrochemical Water Oxidation
In: ACS Energy Letters 2021 (2021), p. 2369−2377
ISSN: 2380-8195
DOI: 10.1021/acsenergylett.1c00904 - , , , :
Novel structuring technique for diamond coatings
In: Diamond and Related Materials 110 (2020)
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2020.108103 - , , , , :
Catalytic electrochemical water splitting using boron doped diamond (BDD) electrodes as a promising energy resource and storage solution
In: Energies 13 (2020), Article No.: 5265
ISSN: 1996-1073
DOI: 10.3390/en13205265 - , , , , , , :
Pilot Study on the Use of a Laser-Structured Double Diamond Electrode (DDE) for Biofilm Removal from Dental Implant Surfaces
In: Journal of Clinical Medicine 9 (2020)
ISSN: 2077-0383
DOI: 10.3390/jcm9093036 - , , , , :
World's First Thermoelectric Generator Made of Tailored Carbon Allotropes
In: Advanced Engineering Materials (2020)
ISSN: 1438-1656
DOI: 10.1002/adem.202000108 - , , , :
CVD-Diamant als Schutzschicht im Aluminiumguss
In: Gießerei-Praxis (2020), p. 32-34
ISSN: 0016-9781 - , , , , , :
Electrochemical Disinfection of Dental Implants Experimentally Contaminated with Microorganisms as a Model for Periimplantitis
In: Journal of Clinical Medicine (2020)
ISSN: 2077-0383
DOI: 10.3390/jcm9020475 - , , , , :
Boron-Doped Diamond Electrocatalyst for Enhanced Anodic H2O2 Production
In: ACS Applied Energy Materials (2020)
ISSN: 2574-0962
DOI: 10.1021/acsaem.0c00093 - , , , , , :
Influence of In-Situ Electrochemical Oxidation on Implant Surface and Colonizing Microorganisms Evaluated by Scanning Electron Microscopy
In: Materials 12 (2019), Article No.: 3977
ISSN: 1996-1944
DOI: 10.3390/ma12233977 - , , , , , :
Electrochemical Disinfection of Experimentally Infected Teeth by Boron-Doped Diamond Electrode Treatment
In: Journal of Clinical Medicine (2019)
ISSN: 2077-0383
DOI: 10.3390/jcm8122037 - , , , , :
Elimination of bacterial contaminations by treatment of water with boron-doped diamond electrodes
In: World Journal of Microbiology & Biotechnology 35 (2019), Article No.: 48
ISSN: 0959-3993
DOI: 10.1007/s11274-019-2624-y - , , , :
Electrochemical Degradation of Reactive Blue 19 Dye by Combining Boron-Doped Diamond and Reticulated Vitreous Carbon Electrodes
In: ChemElectroChem (2019)
ISSN: 2196-0216
DOI: 10.1002/celc.201900563 - , , , , , , , :
Boron-doped diamond (BDD) as an efficient back contact to thermally grown TiO2 photoelectrodes
In: ChemElectroChem (2019)
ISSN: 2196-0216
DOI: 10.1002/celc.201901073 - , , , :
Influence of zirconium-based alloys on manufacturing and mechanical properties of ultra high temperature ceramic matrix composites
In: Advances in Applied Ceramics 117 (2018), p. 62-69
ISSN: 1743-6753
DOI: 10.1080/17436753.2018.1509810 - , , , , , :
Diamant auf Stahl gegen den Oberflächenverschleiß durch Aluminiumanhaftungen
In: Konstruktion (2017), p. IW8-IW9
ISSN: 0720-5953 - , , :
Long term oxidation behavior of micro- and nano-crystalline CVD diamond foils
In: Diamond and Related Materials 61 (2016), p. 41-45
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2015.11.009 - , , :
Growth and thermoelectric properties of nitrogen-doped diamond/graphite
In: Diamond and Related Materials 63 (2016), p. 222-226
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2015.10.023 - , , , , :
Fabrication of ultra high temperature ceramic matrix composites using a reactive melt infiltration process
In: Journal of the European Ceramic Society 36 (2016), p. 3647-3655
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2016.04.039 - , , , , , :
Fabrication and application of boron doped diamond BDD electrode in olive mill wastewater treatment in Jordan
In: Journal of Water Reuse and Desalination 7 (2016)
ISSN: 2408-9370
DOI: 10.2166/wrd.2016.062 - , , , , , :
Thermoelectric transport properties of boron-doped nanocrystalline diamond foils
In: Carbon 81 (2015), p. 650-662
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2014.10.002 - , , :
Mechanical properties of micro- and nanocrystalline diamond foils
In: Philosophical Transactions of the Royal Society A-Mathematical Physical and Engineering Sciences 373 (2015), Article No.: 20140136
ISSN: 1364-503X
DOI: 10.1098/rsta.2014.0136 - , , , :
Adhesive bonding and brazing of nanocrystalline diamond foil onto different substrate materials
In: Applied Surface Science 282 (2013), p. 335-341
ISSN: 0169-4332
DOI: 10.1016/j.apsusc.2013.05.129 - , , , :
Surface energy of growth and seeding side of free standing nanocrystalline diamond foils
In: Surface & Coatings Technology 232 (2013), p. 640-644
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2013.06.051 - , , , :
Direct measurement of Young's modulus, fracture strength and fracture toughness of nanocrystalline diamond foil by means of tensile testing
In: Acta Materialia 61 (2013), p. 7000-7008
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2013.08.014 - , , , , , , :
Nano-crystalline diamond-coated titanium dental implants - A histomorphometric study in adult domestic pigs
In: Journal of Cranio-Maxillofacial Surgery 41 (2013), p. 532-538
ISSN: 1010-5182
DOI: 10.1016/j.jcms.2012.11.020 - , , , :
Self-supporting nanocrystalline diamond foils: Influence of template morphologies on the mechanical properties measured by ball on three balls testing
In: Acta Materialia 59 (2011), p. 3343-3351
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2011.02.009 - Ahmed F., Bayerlein K., Rosiwal S., Göken M., Durst K.:
Stress evolution and cracking of crystalline diamond thin films on ductile titanium substrate: Analysis by micro-Raman spectroscopy and analytical modelling
In: Acta Materialia 59 (2011), p. 5422-5433
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2011.05.015 - , , , , :
Influence of surface roughness on the tribological properties of HF-CVD diamond coated heat-treatable steel
In: Wear 269 (2010), p. 811-815
ISSN: 0043-1648
DOI: 10.1016/j.wear.2010.08.009 - , , :
Self-supporting nanocrystalline diamond foils - A new concept for crystalline diamond on any technical surface
In: Key Engineering Materials 438 (2010), p. 163-169
ISSN: 1013-9826
DOI: 10.4028/www.scientific.net/KEM.438.163 - , , , :
Influence of grain size on the wear behavior of CVD diamond coatings in micro-EDM
In: International Journal of Advanced Manufacturing Technology 47 (2010), p. 919-922
ISSN: 0268-3768
DOI: 10.1007/s00170-009-2131-7 - , , , , , :
In-situ tensile testing of crystalline diamond coatings using Raman spectroscopy
In: Surface & Coatings Technology 204 (2009), p. 1022-1025
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2009.04.030 - , , :
Monitoring oxygen species in diamond hot-filament CVD by zircon dioxide sensors
In: Vacuum 82 (2008), p. 599-607
ISSN: 0042-207X
DOI: 10.1016/j.vacuum.2007.09.002 - , , , :
Well adherent diamond coatings on steel substrates
In: Advanced Engineering Materials 10 (2008), p. 657-660
ISSN: 1438-1656
DOI: 10.1002/adem.200800060 - , , :
Influence of surface topography of HF-CVD diamond films on self-mated planar sliding contacts in dry environments
In: Surface & Coatings Technology 201 (2007), p. 6197-6205
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2006.11.024 - , , , , , , :
Improved flow conditions in diamond hot filament CVD-Promising deposition results and gas phase characterization by laser absorption spectroscopy
In: Vacuum 81 (2007), p. 619-626
ISSN: 0042-207X
DOI: 10.1016/j.vacuum.2006.08.004 - , , , , :
CVD diamond coating of steel on a CVD-TiBN interlayer
In: Surface & Coatings Technology 201 (2006), p. 718-723
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2005.12.035 - , , , :
Generation and oxidation of wear debris in dry running tests of diamond coated SiC bearings
In: Diamond and Related Materials 15 (2006), p. 749-753
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2005.10.069 - , , , :
Diamond coating of steel at high temperatures in hot filament chemical vapour deposition (HFCVD) employing chromium interlayers
In: Diamond and Related Materials 15 (2006), p. 754-760
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2005.10.053 - , , , , :
Diamond single crystal growth in hot filament CVD
In: Diamond and Related Materials 15 (2006), p. 536-541
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2006.01.003 - , , :
Tribological behaviour of and fibre textured CVD diamond films under dry planar sliding contact
In: Diamond and Related Materials 15 (2006), p. 1682-1688
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2006.02.008 - , , , , , :
Gas-phase characterization in diamond hot-filament CVD by infrared tunable diode laser absorption spectroscopy
In: Vacuum 80 (2006), p. 967-976
ISSN: 0042-207X
DOI: 10.1016/j.vacuum.2005.12.009 - , , :
Chemical vapor infiltration (CVI) - Part II: Infiltration of porous substrates with diamond by using a new designed hot-filament plant
In: Diamond and Related Materials 15 (2006), p. 49-54
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2005.07.010 - , , , , :
Deposition of uniform and well adhesive diamond layers on planar tungsten copper substrates for heat spreading applications
In: Materials Science and Engineering B-Advanced Functional Solid-State Materials 127 (2006), p. 186-192
ISSN: 0921-5107
DOI: 10.1016/j.mseb.2005.10.018 - , , , , , :
The bone-metal interface of defect and press-fit ingrowth of microwave plasma-chemical vapor deposition implants in the rabbit model
In: Clinical Oral Implants Research 16 (2005), p. 98-104
ISSN: 0905-7161
DOI: 10.1111/j.1600-0501.2004.01079.x - , , , :
Micro structured CVD diamond coated sliding bearings for improved tribological performance under dry running conditions
In: Materialwissenschaft und Werkstofftechnik 35 (2004), p. 929-935
ISSN: 0933-5137
DOI: 10.1002/mawe.200400831 - , , , , :
CVD-diamond single-crystal growth
In: Journal of Crystal Growth 271 (2004), p. 425-434
ISSN: 0022-0248
DOI: 10.1016/j.jcrysgro.2004.08.003
URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TJ6-4DN2F3G-2&_user=616145&_coverDate=11%2F15%2F2004&_alid=882231821&_rdoc=5&_fmt=high&_orig=search&_cdi=5302&_sort=d&_docanchor=&view=c&_ct=5&_acct=C000032322&_version=1&_urlVersion=0&_userid=616145&md5=aab768e5088b5cd3b830778b911906c1 - , , , :
Chemical vapor infiltration (CVI)-Part I: A new technique to achieve diamond composites
In: Diamond and Related Materials 13 (2004), p. 834-838
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2003.10.041 - , , , :
High temperature diffusion chromizing as a successful method for CVD-diamond coating of steel Part II
In: Diamond and Related Materials 12 (2003), p. 701-706
ISSN: 0925-9635 - , , , , :
Dependence of the growth rate, quality and morphology of diamond coatings on the pressure during the CVD-process in an industrial hot-filament plant
In: Diamond and Related Materials (2002), p. 589-595
ISSN: 0925-9635
DOI: 10.1016/S0925-9635(01)00702-6
URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WW2-46922JT-2R&_user=616145&_coverDate=07%2F15%2F2002&_alid=61213825&_rdoc=4&_fmt=summary&_orig=search&_cdi=7118&_sort=d&_st=4&_docanchor=&_acct=C000032322&_version=1&_urlVersion=0&_userid=616145&md5=96e19a3f085215738b5c6e838997cee5 - , , , , , :
High temperature diffusion chromizing as a sucsessful method for CVD-diamond coating of steel
In: Diamond and Related Materials (2002), p. 757-762
ISSN: 0925-9635
URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TWV-44VGB6Y-7&_user=616145&_coverDate=06%2F30%2F2002&_alid=61213825&_rdoc=6&_fmt=summary&_orig=search&_cdi=5572&_sort=d&_st=4&_docanchor=&_acct=C000032322&_version=1&_urlVersion=0&_userid=616145&md5=b570dd5ffcb188afd2838a21b782f347 - , , , :
Structural changes of tungsten heating filaments during CVD of diamond
In: Materials Science and Engineering A335 (2002), p. 236-245
ISSN: 0025-5416
DOI: 10.1016/S0921-5093(01)01933-5
URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WW2-46R0CM8-15J&_user=616145&_coverDate=09%2F09%2F2002&_alid=61213825&_rdoc=1&_fmt=summary&_orig=search&_cdi=7118&_sort=d&_st=4&_docanchor=&_acct=C000032322&_version=1&_urlVersion=0&_userid=616145&md5=efd9e0b552f6ef425492587f3b7facea - , , , , :
Comparison of thermal conductivities on abraded and untreated CVD-Diamond obtained by scanning thermal microscopy
In: International Journal of Modern Physics B 16 (2002), p. 922-926
ISSN: 0217-9792
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0037139065&origin=inward - , , , , :
Examination of the Bone-Metal Interface of Titanium Implants Coated by the Microwave Plasma Chemical Vapor Deposition Method
In: International Journal of Oral & Maxillofacial Implants 17 (2002), p. 778-785
ISSN: 0882-2786
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0036834274&origin=inward - , , :
Diamant auf Stahl. Diffusionschromierung im Vakuum für die CVD-Diamantbeschichtung
In: Magazin für Oberflächentechnik 2001 (2001), p. 59-62
ISSN: 0026-0797
URL: http://www.hanser.de/zeitschriften-db/MO/MO100934.htm - , , , :
Graphite interlayer formation during CVD diamond coating of iron base alloys: The analogy to metal dusting
In: Advanced Engineering Materials 2 (2000), p. 369-374
ISSN: 1438-1656
URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WW2-46WP5DF-346&_user=616145&_coverDate=10%2F01%2F2002&_alid=61213825&_rdoc=7&_fmt=summary&_orig=search&_cdi=7118&_sort=d&_st=4&_docanchor=&_acct=C000032322&_version=1&_urlVersion=0&_userid=616145&md5=5c5ca2e6e0cf3e86643a51b2e4f6587b - , , , , , :
Tribological performance of mechanically lapped chemical vapor deposited diamond coatings
In: Surface & Coatings Technology (1999), p. 599-608
ISSN: 0257-8972
DOI: 10.1016/S0257-8972(99)00136-X - , , , , , :
Friction and wear behaviour of polycrystalline diamond coatings on Ti-6Al-4V in sliding contact with ceramics
In: Tribologie und Schmierungstechnik 46 (1999), p. 45-49
ISSN: 0724-3472 - , , , , :
CVD diamond films as protective coatings on titanium base alloys
In: Journal of Advanced Materials 31 (1999), p. 8-13
ISSN: 1070-9789
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0343081469&origin=inward - , , , , , :
Erosion resistance of CVD diamond-coated titanium alloy for aerospace applications
In: Surface & Coatings Technology 112 (1999), p. 129-132
ISSN: 0257-8972
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0033077682&origin=inward - , , , , :
Microwave-plasma-CVD of diamond coatings onto titanium and titanium alloys
In: Surface & Coatings Technology 98 (1998), p. 1079-1091
ISSN: 0257-8972
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0039355516&origin=inward - , , , :
CVD diamond films as protective coatings on titanium alloys
In: International Journal of Refractory Metals & Hard Materials 16 (1998), p. 217-222
ISSN: 0263-4368
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0031639892&origin=inward - , , , , :
Tribological optimization of CVD diamond coated Ti-6A1-4V
In: Diamond and Related Materials 7 (1998), p. 1342-1347
ISSN: 0925-9635
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0032172524&origin=inward - , , , , :
Characterization of CVD diamond-coated titanium base compounds for biomedical applications
In: Biomedizinische Technik (1998), p. 382-383
ISSN: 0013-5585
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0032239239&origin=inward - , , , :
CVD diamond coated titanium alloys for biomedical and aerospace applications
In: Surface & Coatings Technology (1997), p. 514-520
ISSN: 0257-8972
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0031247495&origin=inward - , , , , :
Growth stages of chemical vapor deposited diamond on the titanium alloy Ti-6A1-4V
In: Diamond and Related Materials 6 (1997), p. 1658-1667
ISSN: 0925-9635
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0040309623&origin=inward - , , , , , :
The influence of diamond chemical vapour deposition coating parameters on the micro structure and properties of titanium substrates
In: Diamond and Related Materials 5 (1996), p. 304-307
ISSN: 0925-9635
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0041686948&origin=inward
Book Contributions
- , , :
Environmentally sustainable elimination of microbes using boron-doped diamond electrodes: From water treatment to medical applications
In: Pankaj Chowdhary, Sujata Mani, Preeti Chaturvedi (ed.): Microbial Biotechnology: Role in Ecological Sustainability and Research, Wiley Blackwell, 2022, p. 355-364
ISBN: 9781119834489
DOI: 10.1002/9781119834489.ch18 - , , , :
Diamond Coatings as Wear Protection for Metallic Devices with Complex Geometry
In: S. Rosiwal (ed.): FOROB II Abschlußbericht, 2001, p. 33-50
Conference Contributions
- , , , :
Influence of the width of cut in ultrasonic vibration superimposed face milling of X46Cr13 and X40CrMoV5-1 on the surface microstructure and CVD diamond coating adhesion
7th CIRP Conference on Surface Integrity, CSI 2024 (Bremen, DEU, 15. May 2024 - 17. May 2024)
In: Daniel Meyer, Bernhard Karpuschewski, Marco Eich, Matthias Hettig (ed.): Procedia CIRP 2024
DOI: 10.1016/j.procir.2024.05.039 - , , , , :
Surface Microstructuring of Steel Components for CVD Diamond Coating by Ultrasonic Vibration Superimposed Face Milling using Tailored Tools
5th CIRP Conference on Surface Integrity, CSI 2020 (, 1. June 2020 - 5. June 2020)
In: Pedro Jose Arrazola, Aito Madariaga (ed.): Procedia CIRP 2020
DOI: 10.1016/j.procir.2020.02.020 - , , , , , :
Veratric acid removal from water by electrochemical oxidation on BDD anode
2nd International Conference on Advanced Materials, ICAM 2017 (Irbid, 10. July 2017 - 13. July 2017)
In: IOP Conference Series: Materials Science and Engineering Volume 305 2018
DOI: 10.1088/1757-899X/305/1/012021 - , , , :
Application of Electrochemical Treatment Technology of Produced Water of a Heavy Oil Field, via Boron Doped Diamond BDD Electrode
SPE Latin America and Caribbean Heavy and Extra Heavy Oil Conference (Lima, 19. October 2016 - 20. October 2016)
In: Proceedings of SPE Latin America and Caribbean Heavy and Extra Heavy Oil Conference 2016 - , , , , :
Using boron doped diamond foils for fabrication of micro cavities with EDM
13th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2013
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84908155805&origin=inward - , , , , , , :
Using diamond coated tool-electrodes for drilling micro holes with EDM
11th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2011
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84908255357&origin=inward - , , , :
CVD-Diamond Coating as Wear Protection for Standard Heat-Treatable Steel
International Symposium on Friction, Wear and Wear Protection 2008 (Aachen)
DOI: 10.1002/9783527628513.ch30 - , , , :
Influence of coatings in micro-EDM
16th International Symposium on Electromachining, ISEM 2010 (Shanghai)
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84883897735&origin=inward - , , , , :
Uniform diamond coatings on planar tungsten copper substrates for heat spreading applications
16th Internationales Plansee Seminar 2005 (Reutte)
In: 16th Internationales Plansee Seminar 2005 Proceedings, Powder Metallurgical High Performance Materials, Vol. 1 2005 - , , :
Herstellung neuartiger Substratwerkstoffe durch Infiltration mit Diamant aus der Gasphase
14. Symposium Verbundwerkstoffe und Werkstoffverbunde - , , , , , , , :
CVD-Diamond-coatings on silicon-carbide-bearings for dry-running-conditions
Symposium Tribological Coatings for Components (München)
In: Werkstoffwoche 2001, München: 2001 - , , , :
High growth rate and high quality CVD diamond growth
Applied Diamond Coating / Frontier Carbon Technology (Auburn)
In: Applied Diamond Coating / Frontier Carbon Technology 2001 - , , , :
Reducing Friction and Wear of Titanium Alloys by CVD-Diamond Coating
12th International Colloquium (Esslingen)
In: TRibology 2000 - PLUS 2000 - , , :
Verschleißschutz von Titanlegierungen für die Luftfahrttechnik durch CVD-Diamantschichten
Werkstoffwoche '98 (München)
In: R. Stauber, C. Liesner, R. Bütje, M. Bannasch (ed.): Werkstoffe für die Verfahrenstechnik/Werkstoffwoche 98, Symposium 2 1999 - , , , , , :
Well adherent and morphologically controlled diamond coatings on three dimensional engineering components: A physicists dream or an engineer's reality?
International Confernce on Metallurgical Coatings and Thin Films (San Diego) - , , , , :
3D-Diamantbeschichtung von Titanbauteilen
Werkstoffwoche 98 (München, 12. October 1998 - 15. October 1998)
In: H. Dimigen, W. Paatsch (ed.): Oberflächentechnik / Werkstoffwoche 98, Symposium 11 1999 - , , , , :
Characterization of CVD-Diamond Coated Titanium Alloys for Biomedical Applications
9th Cimtec-World Forum on New Materials (Florenz, 14. June 1998 - 19. June 1998)
In: P. Vincenzini (ed.): Vol. 21 Diamond Films - II, Proceedings of Topical Symposium IV "Diamond Films: Synthesis, Processing and Applications" of the Forum on New Materials of the 9th CIMTEC-World Ceramics Congress and Forum on New Materials 1999 - , , , :
3D-Diamantbeschichtung von Titanverdichterschaufeln in Flugtriebwerken
Workshop Hochleistungsschichten für Verbrennungsmotoren (Frankfurt/Main) - , , , , :
Diamond coatings - a new approach for wear protection of titanium alloys
Titanium '99 (St. Petersburg, 7. July 1999 - 11. July 1999)
In: I. V. Gorynin, S. S. Ushkov (ed.): Proceedings of the Ninth World Conference of Titanium 1999 - , , :
Biokompatibilitaet von CVD-Diamantschichten auf Titanlegierungen
Werkstoffwoche '98 (München, 12. October 1998 - 15. October 1998)
In: H. Planck, H. Stallforth (ed.): Werkstoffe für die Medizintechnik/Werkstoffwoche 98, Symposium 4 1999 - , , , , , :
Thermodynamic and Kinetic Investigation of Low Pressure Hydrogen Absorption by the Titanium Alloy Ti-6Al-4V
Titanium '99 (St. Petersburg, 7. June 1999 - 11. June 1999)
In: I. V. Gorynin, S. S. Ushkov (ed.): Proceedings of the Ninth World Conference of Titanium 1999 - , , , :
Mikrowellenplasma-CVD- Abscheidung von Diamantschichten auf Titan und Titanlegierungen
Werkstoffwoche '96
In: G. Ziegler, H. Cherdron, W. Hermel, J. Hirsch, H. Kolaska (ed.): Werkstoff- und Verfahrenstechnik/Werkstoffwoche '96, Symposium 6 1997 - , , , , , :
CVD-Diamantschichten als Verschleißschutz von Metallen
2. Industriefachtagung Oberflächen- und Wärmebehandlungstechnik OWT'97 (Chemnitz) - , , , :
Diamantschichten als Verschleißschutz
Neue Anwendungen für moderne Oberflaechentechnologien (Nürnberg)
Thesis
- :
Dotierung von CVD-Diamant für die n-Leitung (Dissertation, 2019) - :
Bordotierte Diamantfolie: Herstellung und thermoelektrische Eigenschaften (Dissertation, 2016) - :
Nanokristalline Diamantfolie: Herstellung und Eigenschaften (Dissertation, 2013) - :
Beeinflussung der Titankarbid-Schichtdicke bei der HFCDV-Diamantbeschichtung von Titan durch Oberfächenvorbehandlung und Variation der Beschichtungsparameter (Dissertation, 2013) - :
Eigenspannungen in Mehrschichtaufbauten aus Diamant und Chromkarbid auf Vergütungsstählen (Dissertation, 2011) - :
Langzeitstabile Diamantelektroden auf Titansubstrat (Dissertation, 2010) - :
Grundsatzuntersuchungen zum Einsatz von diamantbeschichteten Siliziumkarbid-Gleitringen im Trockenlauf (Dissertation, 2008) - :
Diamantabscheidung im Heißdraht CVD Verfahren: Wachstum von Einzelkristallen und Gasphasencharakterisierung (Dissertation, 2007) - :
Reibung und Verschleiß von CVD-Diamantschichten in trockenen flächigen Gleitkontakten (Dissertation, 2007) - :
Chemische Gasphaseninfiltration poröser Substrate mit Diamant (Dissertation, 2007) - :
Physikalische Grundlagen der technischen Diamantabscheidung im Heißdraht-CVD-Verfahren (Dissertation, 2003) - :
CVD-Diamantschichten von Titanverdichterschaufeln zur Verbesserung der Schwingungsverschleißfestigkeit (Dissertation, 2001) - :
CVD-Diamantschichten zur Verbesserung der Oberflächeneigenschaften von Titanwerkstoffen in der Gelenkendoprothetik (Dissertation, 2000) - :
Niederdruck-Abscheidung von Diamantschichten auf Titanwerkstoffen als Verschleißschutz (Dissertation, 1999) - :
Bioinspirierte Diamantlaminate: Herstellung und Eigenschaften (Dissertation, 2024)
Funding source: Bundesministerium für Wirtschaft und Technologie (BMWi)
Project leader:
Der Aluminiumdruckguss ist ein effizientes und sehr weitverbreitetes Verarbeitungsverfahren. Allerdings tritt bei der Herstellung undBearbeitung von Aluminiumbauteilen ein großes Problem auf. Aluminium verbindetbzw. legiert sich bei erhöhten Temperaturen bzw. in der Schmelze mit nahezuallen Metallen. So kommt es beim Gießen von Aluminiumbauteilen häufig zuWerkzeugversagen (Ausspülungen, Risse), da die Aluminiumschmelze mit dem Eisender Stahlform bzw. mit darauf aufgebrachten Schutzschichten reag…
Funding source: Bundesministerium für Wirtschaft und Technologie (BMWi)
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Funding source: Deutsche Forschungsgemeinschaft (DFG)
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Funding source: Deutsche Forschungsgemeinschaft (DFG)
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Funding source: Bayerisches Staatsministerium für Wirtschaft und Medien, Energie und Technologie (StMWIVT) (ab 10/2013)
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Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
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Ziel der geplanten Arbeiten sind die Erforschung, Entwicklung und Anwendung von neuen verschleißfesten Elektrodendiamantdünnschichten für die Mikrosenkerosion. Der Vorteil solcher Diamantbeschichtungen liegt in der effizienten Mikrostrukturierung von großflächigen Elektroden mit spanenden Fertigungsverfahren wie z. B. Mikrofräsen und dem anschließenden Beschichten mit einer verschleißfesten Beschichtung, welche einen effizienten Materialabtrag während des Einsatzes ermöglicht. Durch den Einsa…
Funding source: Bayerisches Staatsministerium für Wirtschaft, Infrastruktur, Verkehr und Technologie (StMWIVT) (bis 09/2013)
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Das Aufgabengebiet „Innovative solarthermische Energiegewinnung“ hat sich zum Ziel gesetzt, die Kombination von Nickelbasisstrahlungsabsorbern mit thermoelektrischen Materialien zur Stromerzeugung zu untersuchen. Dabei werden in additiven Fertigungsverfahren neuartige offenzellulare Receiverstrukturen aus hochtemperaturbeständigen Superlegierungen (Nickel- und Cobaltbasis) entwickelt und getestet. Weiterhin werden p- und n-leitende Diamantstrukturen für den Bau eines effizienten Thermoelektrischen Generat…
Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
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Thermoelectric generators (TEG) based on the Seebeck Effect can directly produce electrical current from the waste heat generated by cars or power plants for instance. The established TEG materials currently enable no economical use due to its toxicity, its rare availability (Bismuth- and Lead Tellurides) or its low efficiency (Silicon Germanium).Single crystalline and microcrystalline diamond have a very high thermal conductivity (ca. 2000W/mK) and a very low electrical conductivity, therefore diamond seems to be unsuitable as thermoelectric material. Nanocrystalline diamond foils can be produced by chemical vapour deposition of boron doped diamond on temperature stable templates. After deposition a controlled delamination of the complete nanodiamond layer as nanodiamond foil is possible. It is a promising thermoelectric material, due to its good electrical conductivity and low thermal conductivity (ca. 2 W/mK). Nano diamond is very stable at elevated temperatures (ca. 600°C in air, ca. 1100°C without oxygen). These properties should enable high thermoelectric efficiencies (ZT- value > 2-3). In this project we want to produce boron-dope Nanocrystalline diamond foils with by variation of the HF-CVD process parameters (pressure, methane content, boron content, coating temperature). The thermoelectric properties (Seebeck coefficient, thermal and electrical conductivity) will be measured. Furthermore a thermoelectric generator should be built and characterized by using the new boron-doped foils (p-conductivity) and "poor" (low effiency) N-doped carbon foils (n-conductivity).
Funding source: Industrie
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Funding source: Bayerische Forschungsstiftung
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Funding source: Bayerisches Staatsministerium für Wirtschaft, Infrastruktur, Verkehr und Technologie (StMWIVT) (bis 09/2013)
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Funding source: BMBF / Verbundprojekt
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Funding source: Bayerische Forschungsallianz (BayFOR)
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Research of hot-filament CVD technology constantly continues to provide new scientific developments that are transferred into economically functioning products. This business model enabled the establishment of the worldwide largest experimental CVD facility.
Development details:
- Upscaling of the hot-filament diamond surface area up to 10.000cm2.
- Flexible chamber set up to coat small (weight < 1 g) as well as large components (weight > 40 kg) via CVD.
- Reduction of energy input (electric power/carat) for hot-filament CVD.
- Homogenisation of diamond growth rate and boron doping for a 2D and 3D substrates.
- Reproducible substrate temperature ranging from 650 °C to 950 °C.
- Integration of heat treatment during the hot-filament process.
- Development of in-situ measurements, e.g. online measurement of diamond growth rate.
Project leader:
The addition of Titanium or Vanadium during the CVD diamond coating process is expected to enable new electrical states in diamond crystal structures. The effect of alloying on the mechanical properties is also being investigated.
Current research topics:
- Evaporators for organometallic compounds with Titanium or Vanadium.
- Combination of sputtering processes with hot-filament diamond CVD.
Project leader:
Boron doped diamond (BDD) electrodes have a very broad application potential. This is due to the high over potential at the cathode (hydrogen formation at -1,2 V) and anodic (oxygen formation at 2.5 V) water electrolysis. This makes BDD electrodes suitable for applications, like: Efficient disinfection by killing bacteria, water treatment via direct chemical oxidation of all carbon types and cathodic reduction of CO2 in hydrocarbons.
We offer different electrochemical reactors with diamond electrodes for research partners and industries.
Electrochemical reactors with diamond electrodes:
- Batch systems with CVD-diamond for expanded metals or plate-like electrodes for water treatment up to 1m3 water volume.
- Experimental flow reactors.
- Mini water disinfection systems on USB-basis.
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Different steels can be CVD-diamond-coated via high temperature chrome-carbide diffusion interlayers or CVD titanium-boron-nitrides. An adjusted diamond coating temperature and heat treatment is necessary to maintain the functionality (strength) of the diamond coated steel components. The research focus lies on the expansion of the spectrum of diamond coatable steels, the optimisation of necessary steel strength and strongly adherent diamond layers with a thickness higher than 10 µm.
An important application of diamond coated steel is the processing of aluminium, since aluminium does not react with the diamond surface at temperatures higher than 500 °C.
Examples:
- Gas pressure spring of 41Cr4.
- Screw taps made of tool steel HS 2-9-2.
- Tools for aluminium high pressure die casting made of hot-working steels X37CrMoV5-1 (12343) and X46Cr13 (1.4034).
- Ultrasound welding sonotrodes for aluminium and copper cables e.g. out of powder metallurgical steel SPM10.
Project leader:
Adherent CVD Diamond layers on hard metals are possible with titanium-boron-nitride intermediate layers. The diamond layer thickness can be higher than 100 µm. The removal of the cobalt binding phase via etching is no longer necessary, which improves the mechanical strength in the intermediate zone.
Examples:
- Piston rings and ball bearings made of hard metals
- Hard metal tools
- Hard metal erosion protection components
Project leader:
In 1995, we started research and development of CVD diamond coatings on silicon carbide ball bearings and piston rings.
In 2002 the know-how gained in Bavarian research projects was successfully transferred into industrial applications by the start-up of DiaCCon (Fürth, Germany).
Project leader:
Since Iron and Cobalt catalyse graphite formation during the CVD diamond deposition, high temperature intermediate layers are developed, which inhibit graphite forming on steel or hard metal surfaces. A special surface microstructure of the intermediate layer alloys a good mechanical adhesion with the subsequently growing diamond layer.
In the temperature range from 500 °C to 1100 °C, CVD deposition of metallic Titanium or Tantalum layers and their carbides, nitrides or borides are possible.
Coating examples:
- TiNB-intermediate layer on X46Cr13 for optimal diamond adhesion.
- TiB2 on graphene fibres for stabilization after Zirconium-melt infiltration.
- Ta on graphene to increase the chemical stability.
Project leader:
The production of the CVD diamond layer can take place separately from the components’ surface. To achieve this, a CVD diamond coating is deposited on silicon or copper based substrates. Free-standing diamond foils with a layer thickness of 20 µm and above can be peeled off the substrate. Laser cutting allows the adequate tailoring of the diamond foils. Bonding and soldering processes are currently under research and are developed for „cold” application onto the component surface.
Application examples:
- Diamond foils on steel to avoid damage caused by high pressured erosion by a water-sand mixture.
- Diamond foils on steel to reduce friction (no aluminium adhesion) and wear during aluminium processing.
Project leader:
Doping and varying the grain sizes via manipulation of CVD process parameters allow the production of diamond foils with application specific properties. On the one hand, micro crystalline diamond foils with a very high heat conductivity (around 2000 W/mK) and a very low electrical conductivity can be produced, while on the other hand boron doped (p-conduction) diamond foils with corresponding micro and nano grain sizes can have electrical conductivities of up to 40.000 S/m and a thermal conductivity of significantly less than 100 W/mK.
It was already possible to measure Seebeck coefficients above 350 µV/K. These completely different diamond foils are being further developed to improve thermoelectrical properties.
The doping of Titanium and Vanadium for the n-conduction of diamond is another topic of research.
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In tribometer experiments CVD-diamond coated silicon carbide piston rings allow dry runs up to 100 km. The diamond wear in these experiments is below 3 µm. Using adjusted process parameters, a textured diamond layer in the <111> direction can be created on the piston ring surface. Therefore, the surface is the most wear resistant when exposed to friction. The diamond coating of piston rings, which has been under investigation since 1995, is now used in industry.
DiaCCon, a company founded by the chair of WTM, is the leading research entity for this application worldwide. A new research topic is the expansion of the diamond piston ring applications to metallic ring materials such as steel or hard metals.
Project leader:
The durability of diamond titanium electrodes is limited especially due to the anodic load of the electrochemical dissociation of the titanium carbide interface between diamond and titanium substrate. With the use of tantalum or niobium as more stable electrode material, the lifetime of diamond electrodes can be increased significantly. A new research effort aims to develop economic diamond electrodes, for which firstly a tantalum or titanium intermediate layer is deposited on titanium or steel plates. After this, the boron doped diamond coating will be deposited.
Project leader:
For Aluminium high pressure die casting, different diamond coated steel tools with TiNB-intermediated layers are applied at industrial partners. The lifetime of bending tools can be increased from a few weeks to several months.
Diamond coated steel sonotrodes for the ultrasonic welding of Aluminium cables are currently also being tested by industrial partners.
The CVD diamond layer can permanently inhibit the reaction of the tool surface with liquid or solid Aluminium. The necessary strength of the steel must be adjusted after every heat treatment, which is steel specific, to avoid material failure due to insufficient fatigue strength. The CVD diamond coating of Tungsten tools is being researched as an alternative or as an addition to the high temperature intermediate layer to avoid special heat treatments.