20%C/Cu复合材料的载流摩擦磨损性能
Friction and Wear Properties with Electrical Current of 20%C/Cu Composite
摘 要
采用冷压成型和热等静压烧结技术制备了20%C/Cu复合材料, 研究了它在干摩擦条件下的载流摩擦磨损性能, 并分析了它的磨损机理。结果表明: 随着载荷增加, 载流和非载流条件下的磨损率均逐渐增大, 第三体的形成使摩擦因数不断降低; 随着滑动速度增大, 载流和非载流条件下的摩擦因数呈微小的上升趋势, 磨损率则先增大后降低; 载流条件下复合材料的摩擦因数和磨损率比非载流时的均有所下降, 载流条件下第三体的润滑作用加强, 提高了材料的耐磨性; 复合材料的磨损过程中存在黏着磨损、磨粒磨损和剥层磨损, 且在磨损表面上并未发现电弧烧蚀的痕迹。
铜/石墨复合材料
载流磨损
第三体
hot isostatic pressing
copper/graphite composite
wear with electrical current
third body
Abstract
20%C/Cu composite was prepared by cold pressing and hot isostatic pressing sintering technology, its friction and wear properties with electrical current were studied and its wear mechanism was analyzed. The results show that wear rate with and without electrical current both increased with the increase of load, and the friction coefficient decreased because of the formation of third bodies. With the increase of sliding velocity, friction coefficient with and without electrical current both increased slightly, but the wear rate increased first and then decreased. The friction coefficient and wear rate with electrical current were lower than that without electrical current. Due to the strengthening of lubrication of third bodies under electrical current, the wear resistance of the composite was improved. There were adhesive wear, abrasive wear and delamination wear during wear, and arc erosion was not be found on the worn surface.
中图分类号 TB333 DOI 10.11973/jxgccl201611017
所属栏目 材料性能及应用
基金项目 四川省成果转化平台建设项目(2014GPTZ0002)
收稿日期 2015/9/2
修改稿日期 2016/9/13
网络出版日期
作者单位点击查看
备注李杨绪(1990-), 男, 湖北枣阳人, 硕士研究生。
引用该论文: LI Yang-xu,ZHU De-gui,PENG Xu,ZHOU Jia-min. Friction and Wear Properties with Electrical Current of 20%C/Cu Composite[J]. Materials for mechancial engineering, 2016, 40(11): 81～87
李杨绪,朱德贵,彭 旭,周加敏. 20%C/Cu复合材料的载流摩擦磨损性能[J]. 机械工程材料, 2016, 40(11): 81～87
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参考文献
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【3】WEI J, CHEN H. Effect of graphite on the friction and wear properties of Cu-based friction materials［J］. Materials Science Forum, 2014, 788(3): 621-626.
【4】袁青, 李兵虎, 童文俊,等. 铜石墨复合材料改性研究进展［J］. 材料导报, 2004, 18(11): 47-49.
【5】SAMAL C P, PARIHAR J S, CHAIRA D. The effect of milling and sintering techniques on mechanical properties of Cu-graphite metal matrix composite prepared by powder metallurgy route［J］. Journal of Alloys & Compounds, 2013, 569(9): 95-101.
【6】KOVACIK J, EMMER S, BIELEK J,et al. Effect of composition on friction coefficient of Cu-graphite composites［J］. Wear, 2008, 265(3/4): 417-421.
【7】张珂, 陈文革, 张玲. 铜-碳电接触摩擦材料的研究［J］. 机械工程材料, 2005, 29(1): 43-45.
【8】郭秀艳, 谢世坤, 夏翔,等. 碳/铜复合粉末的制备及其SPS烧结工艺的研究［J］. 粉末冶金工业, 2008, 18(1): 24-27.
【9】ZHAO H, BARBER G C, LIU J. Friction and wear in high speed sliding with and without electrical current［J］. Wear, 2001, 249(5/6): 409-414.
【10】上官宝, 张永振, 邢建东,等. 铜-10％石墨合金的载流摩擦磨损性能［J］. 机械工程材料, 2009,33(4): 43-45.
【11】YASAR I, CANAKCI A, ARSLAN F. The effect of brush spring pressure on the wear behaviour of copper-graphite brushes with electrical current［J］. Tribology International, 2007, 40(9): 1381-1386.
【12】田磊, 孙乐民, 上官宝,等. 摩擦速度对铜/碳复合材料载流摩擦磨损性能的影响［J］. 机械工程材料, 2012, 36(9): 69-72.
【13】马行驰, 何国求, 何大海, 等. 铜-10%石墨复合材料的载流摩擦磨损行为［J］. 机械工程材料, 2008,32(12): 76-78.
【14】凤仪, 王文芳, 王成福. 电流密度对碳纤维/铜/石墨复合材料摩擦系数的影响［J］. 机械工程材料, 2000,24(5): 40-41.
【15】ERIKSSON M, JACOBSON S. Tribological surfaces of organic brake pads［J］. Tribology International, 2000, 33(12): 817-827.
【16】DESCARTES S, BERTHIER Y. Rheology and flows of solid third bodies: Background and application to an MoS1.6 coating［J］. Wear, 2002, 252(2): 546-556.
【17】刘敬超, 赵燕霞, 孙乐民, 等. 离线率对铜基粉末冶金载流摩擦磨损性能的影响［J］. 润滑与密封, 2011, 36(6): 22-24.
【18】温诗铸. 摩擦学原理［M］. 北京: 清华大学出版社, 1990: 388-389.
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