Tribochemistry of ZDDP and MoDDP chemisorbed films

被引：39

作者：

Martin, J. M. ^{[1
]}

Le Mogne, Th. ^{[1
]}

Grossiord, C. ^{[1
]}

Palermo, Th. ^{[2
]}

机构：

[1] Ecole Cent Lyon, Lab Tribol & Dynam Syst, UMR 5513, F-69131 Ecully, France

[2] Inst Francais Petr, F-92506 Rueil Malmaison, France

来源：

TRIBOLOGY LETTERS | 1996年 / 2卷 / 03期

关键词：

MoDDP; ZDDP; lubricant additives; UHV tribometer; AES; XPS;

D O I：

10.1007/BF00173135

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

By means of a UHV analytical AES/XPS pin-on-flat tribotester, we have investigated tribochemical change as well as transfer mechanisms in static reaction films on steel from ZDDP (anti-wear) and MoDDP (friction modifier) lubricant additives. The results show that solid ZDDP reaction films are able to strongly reduce friction to a value of 0.1-0.3 (in the absence of a film, steel-on-steel gives a friction coefficient value of up to 2). MoDDP reaction films produce ultra-low friction (below 0.05) after an induction period. In situ AES analysis and energy-filtered XPM gave definitive evidence of friction-induced chemical changes and selective material transfer from the flat to the pin. In the ease of MoDDP, the thiophosphate film is decomposed and a "MoS(2)" residual film is found in the wear scar on the pin.

引用

页码：313 / 326

页数：14

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