Regensburg 2004 – scientific programme

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DS: Dünne Schichten

DS 13: Schichteigenschaften III

DS 13.1: Talk

Wednesday, March 10, 2004, 16:45–17:00, HS 31

Microtribology of Nanocomposite Self-lubricating Coatings — •Vladislav Spassov, Imad Ahmed, Giuseppe Bregliozzi, Alan Savan und Henry Haefke — CSEM Swiss Center for Electronics and Microtechnology, Inc., Rue Jaquet-Droz 1, CH 2000, Neuchatel, Switzerland

Tribological coatings deposited by sputter PVD or arc PVD methods from compound targets often contain microparticles embedded in, and projecting through, the coating. When using macroscopic tribological characterisation methods such as pin-on-disk (POD) and linear, oscillating sliding (SRV) tribometer tests, it is difficult to separate the influence of factors such as debris generation and microparticles. Often the debris built-up makes it impossible to measure the real friction coefficient of the coating against the selected material. Therefore, micro-scale analogues of the abovementioned methods have to be applied in order to study the tribological properties of a PVD coating without the influence of debris or microparticles. In the current work, the authors have used a microtribometer to examine the tribological properties of TiAlCN+MoS2 nanocomposite self-lubricating coatings against 100 Cr 6 (DIN 1.3505) steel having oscillating relative movement. The results are discussed and compared to data obtained from macroscopic pin-on-disk tests.