A friction pairing of cam running surface/counterrunner layer as well as to a process for its production are described. To reduce the friction values, the counterrunner layer is a nanodisperse, amorphous, metal-carbon layer comprising 50 to 90 atomic % of carbon, 2 to 25 atomic % of hydrogen and any...http://www.google.com.au/patents/US5205188?utm_source=gb-gplus-sharePatent US5205188 - Friction pairing and process for its production
