摘要
钛合金化学镀镍层结合力的大小直接影响到镀件的使用寿命,镀层的结合力受到众多因素的影响。主要研究了浸蚀活化、预镀镍及镀镍后热处理对钛合金TC4与化学镀镍层结合力的影响。结果表明:HF和HCl的比例是影响钛合金表面活化的重要因素,采用26mL/LHF,58mL/LHCl活化可以获得新鲜的钛合金表面;浸蚀活化后预镀镍再化学镀镍,可得到结合力良好的镀层;镀层经300℃热处理1h后与基体的结合力显著提高。
Electroless Ni coating wasprepared on the surface of Ti alloy TC4.The effects of activation,Ni pre-plating and heat-treatment on the adhesion of the Ni coat-ing to Ti alloy substrate were investigated.Results indicate thatthe ratio of HF and IIC1 has significant effect on activation of thesurface of Ti allov.Fresh surface of TC4 was obtained after beingactivated in mixed acid of 26 ml/L HF + 58 ml/L HC1.The Nicoating prepared after dipping activation and pre-Ni plating hadgood adhesion to the Ti alloy substrate.The Ni coating heat-trea-ted at 300℃ for 1 h had remarkably increased adhesion to the Tialloy substrate.
出处
《材料保护》
CAS
CSCD
北大核心
2010年第2期33-35,共3页
Materials Protection
关键词
钛合金
化学镀镍
结合力
titanium alloy
electroless nickel plating
adhesion
