石墨化学镀铜工艺及摩擦性能研究  

Research on Electroless Copper Plating Technology of Graphite and Its Friction Performances

作　　者：胡萍[1] 陈倩[1] 张锐[1] 张庭跃[1] 谢长虹[1] 

机构地区：[1]武汉理工大学化学工程学院,湖北武汉430070

出　　处：《润滑与密封》2008年第11期58-62,共5页Lubrication Engineering

摘　　要：对石墨表面处理工艺、石墨表面化学镀铜工艺进行了研究,采用正交实验设计方法对镀铜工艺进行优化,对所制备的镀铜石墨表面进行XRD、SEM微观表征;将所制备的镀铜石墨加入聚四氟乙烯中,采用冷压烧结工艺制备固体润滑剂,并测定其摩擦性能。试验结果表明:选用敏化及活化工艺来进行石墨镀前预处理为佳;化学镀时石墨表面能直接生成大量均匀分布的铜微晶,生长至彼此侧面相连时就得到完整镀层,并且石墨颗粒越小,化学镀铜活性越高,因而非常适合用于制备高性能的金属石墨复合材料;当镀铜温度为75℃,CuSO4浓度为25 g/L,EDTA浓度为30 g/L时,所制备的固体润滑剂摩擦因数较低,曲线平稳且磨损量较小。The surface treatment technology and eleetroless copper plating technology of graphite were studied. The chemical copper plating process of graphite surface was designed by the method of orthogonal experiments. The eopperized graphite was characterized by XRD and SEM and then added to FIFE resin for the preparation of solid lubricants by the process of cold pressing and sintering. The friction performances of the samples were tested. The resuhs show that the sensitization and activation process is the best surface pretreatment technology of graphite before plating. Large amount of small copper particles are found on the surface of the graphite with a uniform distribution in the early period of the reaction. The final coating is arrived at when those fine particles grew and met each other. The smaller particles get better chemical activity. This property meets the needs of preparing well-performed metal matrix composite materials. When the concentration of CuSO4 and EDTA is 25 g/L and 30 g/L respectively under the temperature of 75 ℃,the prepared solid lubricant has low and steady friction coefficient and the smallest wear loss.

关 键 词：石墨 化学镀铜 摩擦 固体润滑剂 

分 类 号：TH117[机械工程—机械设计及理论]