Macroscopic evidence of thermally activated friction with polytetrafluoroethylene

被引：30

作者：

Burris, David L.

Perry, Scott S.

Sawyer, W. Gregory ^{[1
]}

机构：

[1] Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL 32611 USA

[2] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

来源：

TRIBOLOGY LETTERS | 2007年 / 27卷 / 03期

关键词：

cryogenic tribology; polytetrafluoroethylene; PTFE; solid lubrication;

D O I：

10.1007/s11249-007-9237-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Under macroscopic pin-on-disk testing the sliding friction coefficient of Polytetrafluoroethylene (PTFE) was investigated over a temperature range of approximately 200-400 K. This study examines the nature of the temperature dependence by testing PTFE pins at varying temperature and humidity on a linear reciprocating pin-on-disk tribometer. The friction coefficient increased monotonically with decreasing temperature from mu = 0.075to mu = 0.210 in a manner consistent with thermal activation; it deviated from this trend only during phase and glass transitions in the PTFE and temperatures below the frost-points for the respective environments.

引用

页码：323 / 328

页数：6

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