Mechanisms of tribochemical film formation: stability of tribo- and thermally-generated ZDDP films

被引:99
作者
Bancroft, G. M. [1 ]
Kasrai, M. [1 ]
Fuller, M. [1 ]
Yin, Z. [1 ]
Fyfe, K. [2 ]
Tan, Kim H. [3 ]
机构
[1] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada
[2] Sarnia Res Ctr, Imperial Oil Prod Div, Sarnia, ON N7T 7M1, Canada
[3] Univ Wisconsin, Canadian Synchrotron Radiat Facil, Stoughton, WI 53589 USA
基金
美国国家科学基金会;
关键词
antiwear; ZDDP; X-ray absorption; P L-edge XANES;
D O I
10.1023/A:1019179610589
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Phosphorus L-edge and sulphur L-edge X-ray absorption near-edge structure (XANES) spectroscopy has been used to characterize the chemical nature of tribochemical and thermo-oxidatively generated films from a sec-ZDDP antiwear agent. The chemical stability of the films has been investigated by rubbing the films in base oil without ZDDP. The P L-edge XANES spectra have shown that the thermal film and in particular the tribo-films are very stable after rubbing in the base oil for a long period of time. The wear scar measurements indicate that best results are given if the coupon and pin is coated with a tribo-film and then rubbed in oil containing ZDDP.
引用
收藏
页码:47 / 51
页数:5
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