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Abstract
The friction and wear behavior of polycrystalline hexagonal cobalt was determined under normal atmospheric conditions, using heavy loads and sliding speeds ranging from 0.92 cm/sec to 36.8 cm/sec. Very uniform wear was observed for most conditions together with a low coefficient of friction. X-ray diffraction measurements showed that this desirable behavior is caused by the formation of a preferred orientation during sliding. Under high-load high-speed conditions a different mode of wear was observed, best described as brittle disintegration. When cobalt was alloyed with 8 percent iron and thus rendered face-centered cubic, a deeply torn wear track, an increased initial wear rate and a high coefficient of friction were obtained.
Presented as an American Society of Lubrication Engineers paper at the ASME/ASLE International Lubrication Conference held in New York City, October 9–12, 1972
Notes
Presented as an American Society of Lubrication Engineers paper at the ASME/ASLE International Lubrication Conference held in New York City, October 9–12, 1972