Tribological properties of Tin-based Babbitt bearing alloy with polyurethane coating under dry and starved lubrication conditions

被引：56
作者：
Zhang, Dongya [1 ,2 ]
Ho, John K. L. [2 ]
Dong, Guangneng [1 ]
Zhang, Hui [1 ]
Hua, Meng [2 ]
机构：
[1] Xi An Jiao Tong Univ, Key Lab Educ, Minist Modern Design & Rotor Bearing Syst, Xian 710049, Peoples R China
[2] City Univ Hong Kong, Dept Mech & Biomed Engn, Hong Kong, Hong Kong, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2015年 / 90卷
关键词：
Polyurethane; PTFE particle; Tribological properties; Babbitt alloy; THRUST-BEARINGS; MECHANICAL-PROPERTIES; FAILURE ANALYSIS; WEAR BEHAVIOR; COMPOSITES; PTFE; FILM; PERFORMANCE; PARTICLES; FRICTION;
D O I：
10.1016/j.triboint.2015.03.032
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
To improve the tribological properties of Babbitt alloy used as journal bearing pad specifically under severe condition, Babbitt substrate was prayed with a coating of polyurethane (PU) polymer which had been suitably modified with PTFE particles. Tribological performances, under dry and starved lubrication conditions, of the Babbitt alloy substrate (i) sprayed with PU composite coating and (ii) with bare surface were investigated. Results showed that Babbitt substrate sprayed with PU composite coating gave better friction reduction and wear resistance than the counterparts of bare Babbitt. This was because the PU composites coating served as protective layer leading to the formation of PTFE transfer film on mating surface, hence improving the associated tribological properties during sliding. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：22 / 31
页数：10
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