Cr-Fe-C合金镀层的电化学磨蚀行为研究  

Wear-corrosion Behavior of Cr-Fe-C Amorphous Electroplating Deposition

作　　者：李敏[1] 李惠东[1] 李惠琪[1] 孙冬柏[2] 

机构地区：[1]山东科技大学材料科学与工程学院,山东青岛266510 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《机械工程材料》2005年第5期27-29,32,共4页Materials For Mechanical Engineering

摘　　要：利用新开发的从Cr3+水溶液中电镀非晶态铬合金的新工艺,在铜合金基体上获得了厚度30μm以上的Cr-Fe-C合金镀层。对经不同温度下热处理的镀层进行了显微硬度和XRD分析和腐蚀磨损电化学行为研究。结果表明:该镀层热处理后伴随逐渐向晶态转化可出现明显的硬化现象。钝性的Cr-Fe-C合金镀层在电解质中局部表面受到摩擦作用时,镀层的磨蚀是腐蚀和磨损两种失效形式相互加强和共同作用的结果。与传统的铬及铬合金镀层相比,该镀层可作为经济的耐磨和耐磨蚀镀层使用。A kind of amorphous Cr alloy deposition with a thickness of more than 30 μm was obtained from Cr3+ aqueous solution by a new electroplating process. The HV and XRD results show that the hardening of deposition was due to crystallization during heat-treatment at different temperatures. The wear-corrosion behavior was investigated and analyzed by using an oscillating friction electrochemical experimental device. It was show that the micro-galvanic corrosion was created during the friction process. So wear-corrosion behavior of deposition was the result of interaction of wear and corrosion. Compared with traditional chromium and chromium alloy layers, the coating can be used economically as wear-resistant and corrosion-resistant coating.

关 键 词：非晶态 三价铬电镀 铬合金 腐蚀磨损 

分 类 号：TG174.44[金属学及工艺—金属表面处理]