Goller, G.; Koty, D.p.; Tewari, S.n.; Singh, M.; Tekin, A.:

Wear and friction behavior of pressure infiltration cast copper-carbon composites.

In: Scandinavian Journal of Metallurgy (Scand J Metall), Jg. 30 (2001) ; Nr. 2, S. 77-83
ISSN: 0371-0459
Zeitschriftenaufsatz / Fach: Chemie
Abstract:
Metal matrix composites, prepd. by pressure infiltration casting of copper base alloy into 2 types of microporous carbon preforms, one with 100% amorphous carbon and the other contg. 40 wt pct. graphite and 60 wt pct. amorphous carbon, have been examd. for their wear and friction behavior under ambient conditions using a pin-on-plate reciprocating wear tester. Micro-structural characterization of tribo-surfaces has been carried out. The thin carbon films formed on the tribo-surface reduced the friction coeff. and wear for the composites, esp. at low loads on the pin. Adhesive wear obsd. on the tribo-surface promoted wear and friction at high loads. The wear and friction were obsd. to be very sensitive to the size and distribution of the microstructural constituents.