Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7003357 | Tribology International | 2014 | 10 Pages |
Abstract
The evolution of transfer layers derived from a-C:H coating/steel ball tribopairs sliding in ambient air is tracked by performing one set of overlapping tribotests on a ball-on-plate device with acceptable repeatability of friction coefficients. After sliding tests, counterparts were separated and probed by optical microscopy, SEM/EDX and XPS. Carbon-based transfer layers were built up in the first cycle of sliding. Except for the typical graphitization of transferred carbon materials, a chemisorbed layer rich in C/O groups was also found on the top surface of transfer layers, and considerably affected the friction behavior of a-C:H coating/steel tribopairs in ambient air.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Jiao Xu, Masahiro Kawaguchi, Takahisa Kato,