Tribological properties of solid lubricants (graphite, h-BN) for Cu-based P/M friction composites

被引：206

作者：

Chen, Baiming ^{[1
,2
,4
]}

Bi, Qinling ^{[1
]}

Yang, Jun ^{[1
]}

Xia, Yanqiu ^{[1
]}

Hao, Jingcheng ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Lanzhou Polytech Coll, Dept Traff Engn, Lanzhou 730050, Peoples R China

[3] Shandong Univ, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Peoples R China

[4] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2008年 / 41卷 / 12期

关键词：

Graphite; h-BN; Cu-based P/M friction composites; SEM;

D O I：

10.1016/j.triboint.2008.02.014

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Cu-based P/M friction composites containing graphite at weight fractions in the range of 0%, 2%. 5%. 8%, 10%, corresponding to the hexagonal boron nitride (h-BN) at weight fractions in the range of 10%, 8%, 5%, 2%, 0%, were fabricated by a P/M hot press method, respectively. The effects of graphite and h-BN on tribological properties of Cu-based P/M friction composites were investigated on a block-on-ring tester. Worn surfaces, microstructures and wear debris of the composites were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Results indicate that lubrication effects of graphite are superior to those of h-BN. With the increase of graphite content wear rates were decreased significantly. Added graphite with low contents of h-BN can stabilize friction and wear properties of Cu-based P/M friction composites. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1145 / 1152

页数：8

共 19 条

[1]

ALLAM IM, 1991, J MATER SCI, V26, P3977

[2] DIRECT TRANSFORMATION OF HEXAGONAL BORON NITRIDE TO DENSER FORMS [J].