赵东平,郭金强,李轩.TC4合金表面Cu/石墨复合镀层的摩擦磨损行为[J].稀有金属材料与工程,2020,49(8):2861~2868.[Zhao Dongping,Guo Jingqiang,Li Xuan.Friction and wear behavior of Cu/graphite composite coating electroplated on TC4 alloy[J].Rare Metal Materials and Engineering,2020,49(8):2861~2868.]
TC4合金表面Cu/石墨复合镀层的摩擦磨损行为
投稿时间:2019-12-18  修订日期:2020-03-22
中文关键词:  TC4合金  无氰电镀  Cu/石墨复合镀层  摩擦磨损  磨损机制
基金项目:国家自然科学(No. 51961003); 陕西省自然科学基础研究计划项目(No. 2019JM-435)
中文摘要:
      采用无氰电镀工艺在TC4合金表面制备了Cu/石墨复合镀层,研究了镀层的组织结构和摩擦磨损行为。结果表明,采用无氰电镀方法能够在TC4合金表面制备出组织致密且与基体结合紧密的Cu/石墨复合镀层,但增加镀层中石墨的含量会降低镀层与基体合金的结合强度,并导致硬度小幅下降。摩擦磨损实验结果表明,Cu/石墨复合镀层具有优良的摩擦磨损防护性能,归因于石墨有效降低了镀层的摩擦系数和磨损率;对镀层磨损形貌、磨损产物和摩擦系数的综合分析结果表明,纯铜镀层的摩擦磨损机制主要为犁削磨损、黏着磨损和剥层磨损,Cu/石墨复合镀层的磨损机制为轻微的削层磨损和疲劳磨损。
Friction and wear behavior of Cu/graphite composite coating electroplated on TC4 alloy
英文关键词:TC4 alloy  cyanide free electroplating  Cu/graphite composite coating  friction and wear  wear mechanisms
英文摘要:
      Cu/graphite composite coating was prepared on TC4 alloy by cyanide free electroplating. The wear behavior and wear mechanisms of the coating were investigated. The results show that Cu/graphite composite coatings with compact structure and relatively strong coating/substrate combination can be obtained by cyanide free electroplating on TC4 alloy. However, increasing the graphite content in the coating would reduce the bonding strength between the coating and the substrate, and lead to a small decrease in coating hardness.The wear tests show that Cu/graphite composite coating can protect the TC4 substrate from wear effectively, demonstrated by its much lower friction coefficients and wear rates than both TC4 substrate and the pure copper coating. Based on a comprehensive analysis of the wear morphologies, wear products and friction coefficients of the coatings, the main wear mechanisms of the pure copper coating can be deduced as ploughing wear, adhesion wear and peeling wear, while those of the Cu/graphite composite coating are concluded as slight layer cutting wear and fatigue wear.
作者单位E-mail
赵东平 赵东平 西安航空学院 飞行器学院 zhaodongping1982@sina.com 
郭金强 赵东平 西安航空学院 飞行器学院  
李轩 四川轻化工大学 机械工程学院 biluaner@163.com 
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