热处理温度对化学镀Ni-P镀层组织和磨损性能的影响  

Effects of Heat Treatment Temperatures on the Structures and Wear Performance of Ni-P Coating by Chemical Plating

作　　者：付贵忠[1] 张垒[1] 王文昌[2] 孔德军[1] 李奇林[1] 

机构地区：[1]常州大学机械工程学院,江苏常州213016 [2]常州大学石油化工学院,江苏常州213164

出　　处：《四川大学学报（工程科学版）》2013年第S1期149-153,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：江苏省自然科学基金资助项目(BK2009104);江苏省研究生科研创新计划资助项目(CXLX11-0388;CXZZ12-731)

摘　　要：利用化学镀在ZL113铝合金表面制备了非晶态Ni-P镀层,通过SEM和XRD表征了其在300～400℃系列温度下处理80 min后表面形貌和物相组成,并用摩擦-磨损试验考察了Ni-P镀层磨损机制。结果表明,热处理使得化学镀Ni-P镀层晶粒尺寸增大,其显微硬度随热处理温度增加,呈准高斯分布,当热处理温度在350℃时,其硬度达到最大值611.2 HV;热处理温度对镀层摩擦系数影响较小,Ni-P镀层磨损过程分3个阶段:磨粒磨损、粘着磨损+磨粒磨损、粘着磨损,在350℃热处理时耐磨性能最佳。The amorphous Ni-P coating was prepared on the surface of ZL113 aluminum alloy by chemical plating,the coating were heat treated at a series temperature of 300~400 ℃ for 80 min,the surface morphologies and phase compositions of the coating were characterized with SEM and XRD,respectively,and the wear mechanism of Ni-P coating was examined by friction-wear test.The results showed that the crystal dimensions of Ni-P coating by chemical plating are grew up with the heat treatment temperatures.The coating hardness increases with the heat treatment temperatures,showing similar Gaussian distribution,and reaches the maximum of 611.2 HV at 350 ℃.The heat treatment temperatures have little effect on friction coefficient by the wear test,the wear process is divided into three stages,i.e.abrasive wear,adhesive-abrasive wear and adhesive wear,and the wear resistance is the best at 350 ℃.

关 键 词：热处理温度 NI-P镀层 表面形貌 显微硬度 摩擦系数 磨损性能 

分 类 号：TG15[金属学及工艺—热处理]