Effect of iron on the dry friction and wear characteristics of copper-based brake lining
In order to obtain high-performance brake lining, the six kinds of materials which consisted of Cu-graphite-Fe-Sn-Cr-SiO2-MoS2, were produced by powder metallurgy technology.In the test, large-size graphite and small-size iron are used.The purpose of this paper is to investigate the influence of iron in the range of 8-20wt.%, with certain content graphite.As a result, the sintered organizations in this composition show high friction coefficient and low wear rate, the friction coefficient is in the range of 0.53-0.81.With iron content increasing, the micro-hardness and compressive strength increase significantly.Furthermore, all of the compressive strength are over77MPa and reach the performance requirement of the brake lining material.Within 8 ~ 18wt.% Fe, the wear resistance of materials enhances with iron content increasing.When the iron content is 20wt.%, excessive iron elevates the separation degree of matrix, which results in wear resistance decreasing.18wt.% Fe material has optimum performance.
copper-based iron content brake lining dry friction
HAN Dan CHEN Hua
School of Material Science and Engineering, Changchun University of Technology, Changchun 130012 China
国际会议
北京
英文
241-245
2014-10-11（万方平台首次上网日期，不代表论文的发表时间）