The Effect of Applied Load on Tribological Behaviors of Potassium Titanate Whiskers Reinforced PEEK Composites Under Water Lubricated Condition |
| |
Authors: | G Y Xie G X Sui R Yang |
| |
Affiliation: | (1) Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China; |
| |
Abstract: | The tribological behavior of potassium titanate whiskers (PTW) reinforced polyetheretherketone (PEEK) composite has been investigated
using the pin-on-disk configuration at different applied loads under water lubricated condition. It was found that the incorporation
of the PTW into PEEK would achieve high wear resistance and low friction coefficient at low load. When the applied load increased
up to 4 MPa, only the composite filled with 5 wt% PTW showed a significant improvement in the frictional reduction and wear
resistance; on the contrary, a rapid increasing of the friction coefficient was observed for the composites of high PTW content.
In the meantime, the severe wear loss occurred along with the sharply increasing temperature. This sudden deterioration of
the wear resistance should be attributed to the change of the wear mechanism. The main wear mechanism of mild fatigue for
the neat PEEK and mild abrasive wear for the 5 wt% PTW filled composite did not alter with the rising of the load. In this
case, no transfer film could be detected on the counterpart surface. However, for the high PTW filled composites, the wear
mechanism changed from the mild abrasive wear at low applied load to the severe fatigue wear at high load. Large amounts of
wear debris were generated by the fatigue-delamination of the composite surface. And then, the debris served as third-body
abrasives during the subsequent sliding process and the wear mechanism changed to severe abrasive wear. And unexpectedly,
a thick and lumpy transfer film was formed on the counterface. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|