不同体系电刷镀高抗硫银−石墨烯复合镀层的性能对比  

Comparative study on properties of highly sulfur-resistant silver-graphene composite coatings electro-brush plated in different baths

作　　者：王熙俊 刘大鹏 刘勇 穆勇 赵昕 潘卓 吴华成 WANG Xijun;LIU Dapeng;LIU Yong;MU Yong;ZHAO Xin;PAN Zhuo;WU Huacheng(Jibei Electric Power Research Institute,State Grid Jibei Electric Power Co.,Ltd.,North China Electric Power Research Institute Co.,Ltd.,Beijing 100045,China;Tangshan Power Supply Company,State Grid Jibei Electric Power Co.,Ltd.,Tangshan 063000,China)

机构地区：[1]国网冀北电力有限公司电力科学研究院(华北电力科学研究院有限责任公司),北京100045 [2]国网冀北电力有限公司唐山供电公司,河北唐山063000

出　　处：《电镀与涂饰》2025年第1期69-73,共5页Electroplating & Finishing

基　　金：国网唐山供电公司科技项目“输变电设备复合镀银发热治理技术研究及应用”(B3010323001D)。

摘　　要：[目的]传统氰化物体系电镀纯银存在镀层耐磨性和抗硫性差、环境污染等问题,开发无氰高抗硫银基复合镀层具有重要的意义。[方法]采用自制无氰镀液和市售氰化物镀液,在铜基体上电刷镀纯Ag镀层和Ag–G(石墨烯)复合镀层,对比了它们的相组成、表面形貌、结合力、显微硬度、耐磨性和抗硫性。[结果]两种体系制备的Ag镀层和Ag–G复合镀层的物相组成相同,结合力都合格。Ag–G复合镀层的表面形貌、耐磨性和显微硬度均优于Ag镀层,除了无氰体系Ag镀层外,其他镀层的抗硫性均满足航空标准HB 5051–1993的要求。与氰化物体系Ag–G复合镀层相比,无氰体系Ag–G复合镀层的石墨烯含量和显微硬度更高,两者的耐磨性相当。[结论]无氰镀液有望代替氰化物镀液用于电刷镀制备高抗硫银复合镀层。[Objective]Traditional cyanide-based electroplating of pure silver has issues such as poor wear resistance and sulfur resistance of coating,environmental pollution,and so on.It is significant to develop cyanide-free and highly sulfur-resistant silver-based composite electroplating process.[Method]Pure Ag coating and Ag–G(graphene)composite coating were prepared on copper substrates by electro-brush plating in a home-made cyanide-free bath and a commercially available cyanide-based bath,respectively.The phase composition,surface morphology,adhesion,microhardness,wear resistance,and sulfur resistance of the coatings electro-brush plated from different baths were compared.[Result]The phase compositions of Ag coating and Ag–G composite coating obtained in the cyanide-free and cyanide-based baths were the same,and qualified in adhesion.Except for the Ag coating obtained in the cyanide-free bath,the sulfur resistance of the other coatings met the requirements of aviation standard HB 5051–1993.Compared with the Ag–G composite coating obtained in cyanide-based bath,the one obtained in cyanide-free bath featured higher graphene content and microhardness,and equivalent wear resistances.[Conclusion]The cyanide-free bath is expected to replace cyanide-based bath for electro-brush plating of highly sulfur-resistant silver-based composite coatings.

关 键 词：电刷镀 银−石墨烯复合镀层 抗硫性 结合力 显微硬度 耐磨性 组织结构 

分 类 号：TQ153.2[化学工程—电化学工业]