Development of low friction wear-resistant coatings

Research has been performed to design a multifunctional coating combining TiN with MoS x resulting in a wear-resistant coating with a low coefficient of friction (COF). The coatings are deposited by a combined physical vapour deposition technique of E-gun evaporation and magnetron sputtering in a BA...

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Bibliographic Details
Published in:Surface & coatings technology 2003-09, Vol.174, p.416-420
Main Authors: Cosemans, P, Zhu, X, Celis, J.P, Van Stappen, M
Format: Article
Language:English
Subjects:
Low friction
Multicomponent coating
Physical vapour deposition
TiN–MoS x
Wear-resistant
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Summary:Research has been performed to design a multifunctional coating combining TiN with MoS x resulting in a wear-resistant coating with a low coefficient of friction (COF). The coatings are deposited by a combined physical vapour deposition technique of E-gun evaporation and magnetron sputtering in a BAI640 equipment. Pin-on-disk (POD) measurements at approximately 50% RH against a corundum (Al 2O 3) ball show a significant decrease in COF compared with the results for a standard TiN coating. The incorporation of a soft phase in the TiN matrix did not lead to a decrease in hardness. The combination of a low COF and high hardness results in a decreased wear rate approximately 20 times lower in POD and 500 times lower in fretting compared to the standard TiN coating. The performance of the composite coating is tested in a drilling application and shows an increased lifetime.
ISSN:0257-8972
1879-3347
DOI:10.1016/S0257-8972(03)00691-1