碳纳米管/锡铅合金复合镀层的滑动磨损特性  

Sliding Friction and Wear Behavior of Electrodeposited Carbon Nanotubes/Tin-Lead Alloy Composite Coatings

作　　者：段志伟[1] 揭晓华[1] 张艳梅[1] 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《材料保护》2013年第5期8-10,3,共3页Materials Protection

基　　金：国家自然科学基金(50775041)资助

摘　　要：锡铅合金用作轴承材料减摩性能良好,但承载能力不足,引入碳纳米管改性可望改善这这种状况,以往对此研究不多。通过复合电沉积方法制备出碳纳米管/锡铅合金复合镀层,采用盘销式相对摩擦磨损试验机研究了不同工艺参数下的碳纳米管/锡铅复合镀层与普通锡铅镀层的摩擦磨损性能。结果表明:在润滑状态下,不同载荷下碳纳米管/锡铅复合镀层的摩擦系数均低于普通锡铅镀层;在同一载荷下随着碳纳米管含量的增加,复合镀层的摩擦系数出现先降低后升高的趋势,当碳纳米管含量为2 g/L时,摩擦系数出现最小值,耐磨性能最好;在不同载荷下,碳纳米管复合镀层的磨损量都小于普通锡铅镀层的磨损量,随着碳纳米管含量的增加,磨损量也出现先减小后增大的现象。Carbon nanotubes/Sn-Pb alloy (denoted as CNTs/Sn-Pb) composite coatings were prepared by electrodeposition. The friction and wear behavior of as-prepared CNTs/Sn-Pb alloy composite coatings was evaluated and compared with that of conventional Sn-Pb coating with a pin-on-disc friction and wear tester. Results indicated that,under lubricated condition,CNTs/SnPb composite coatings exhibited lower friction coefficient than conventional Sn-Pb alloy coating under different loads. At a fixed load,the friction coefficient and wear mass loss of the CNTs/Sn Pb composite coatings initially declined but rose later with increasing content of CNTs,and the composite coating containing 2 g/L CNTs exhibited the lowest friction coefficient and the best wear resistance. In the meantime,CNTs/Sn-Pb composite coatings had better corrosion resistance than conventional Sn-Pb alloy coating.

关 键 词：碳纳米管 锡铅合金镀层 复合电沉积 摩擦磨损性能 

分 类 号：TH133.3[机械工程—机械制造及自动化] TB383.1[一般工业技术—材料科学与工程]