EVIDENCE FOR TRIBOCHEMICAL WEAR ON AMORPHOUS-CARBON THIN-FILMS

被引:96
作者
MARCHON, B
HEIMAN, N
KHAN, MR
机构
[1] Seagate Magnetics, Fremont, CA 94538
关键词
D O I
10.1109/20.50524
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The friction and wear properties between a smooth oxide-based ceramic sliding and an amorphous carbon surface is greatly influenced by the surface chemistry of the carbon layer. Similar to most carbon compounds, surface oxides can form if the surface is exposed to oxygen. These surface species can desorb as carbon monoxide and/or carbon dioxide under the rubbing action of the slider. Such gradual tribochemical wear mechanism induces greater area of true contact, and friction coefficient increases dramatically from 0.2 to 1.2 or higher when repeated sliding contacts are made. In contrast, similar tribological experiments carried out in an inert environment show no friction increase. © 1990 IEEE
引用
收藏
页码:168 / 170
页数:3
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