Low-friction tribofilm formed by the reaction of ZDDP on iron oxide

被引：55
作者：
Ito, Kosuke
Martin, Jean-Michel
Minfray, Clotilde
Kato, Koji
机构：
[1] Tohoku Univ, Grad Sch Engn, Lab Tribol, Aoba Ku, Sendai, Miyagi 9808579, Japan
[2] Ecole Cent Lyon, LTDS, UMR 5513, F-69134 Ecully, France
来源：
TRIBOLOGY INTERNATIONAL | 2006年 / 39卷 / 12期
关键词：
ZDDP; iron oxide; tribofilm;
D O I：
10.1016/j.triboint.2006.01.023
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
An iron oxide layer (mixture of Fe3O4 and FeO) was formed by water-vapor treatment on tool steel plates. Bearing steel cylinders were slid against the plates in PAO with and without 1% zinc dialkyldithiophosphate (ZDDP) at 80 degrees C. The friction coefficient was below 0.06-0.08 with ZDDP, which is more than 20% lower than that without ZDDP and about a half of a steel/steel contact under the same condition. The formation of multi-layered tribofilm of 30-130 nm on the iron oxide was identified by TEM. The bottom part of the tribofilm is a layer of 10-30 nm that contains Zn, Fe, S, P, and O with a gradient composition, where distribution peaks of Zn and S were found by EDX. (c) 2006 Elsevier Ltd. All rights reserved.
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页码：1538 / 1544
页数：7
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