Piston rings
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 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.
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Publications:
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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 - , , :
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 - , , , :
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 - , , , :
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-coatings on silicon-carbide-bearings for dry-running-conditions
Symposium Tribological Coatings for Components (München)
In: Werkstoffwoche 2001, München: 2001