糖精钠对直流电沉积纳米镍层性能及组织的影响  

Influence of Saccharin Sodium on Performance and Microstructure of Nanocrystalline Nickel Coating Obtained by Direct Current Electrodeposition

作　　者：桑付明[1] 黄明湖[1] 程瑾宁[1] 

机构地区：[1]哈尔滨工业大学(威海)海洋学院,山东威海264209

出　　处：《材料保护》2010年第9期4-5,12,共3页Materials Protection

基　　金：哈尔滨工业大学(威海)博士启动基金资助项目(IMJQ10070012)

摘　　要：为了弄清糖精钠对纳米镍镀层结构及性能的影响,采用直流电沉积技术制备了纳米镍层。研究了糖精钠的浓度对镀层光亮性、硬度、柔韧性以及孔隙率的影响,并采用XRD和电化学测量法对镀层进行了表征和分析。结果表明:糖精钠通过吸附在镍晶粒的(200)晶面,抑制其晶面的生长,从而细化了晶粒。Nanocrystalline nickel coating was prepared by using direct current electrodeposition.The effects of concentration of saccharin sodium on the brightness,hardness,flexibility and porosity of the nanocrystalline nickel coating were investigated.The nanocrystal-line nickel coating was characterized by means of X-ray diffrac-tion and electrochemical analysis.It was found that saccharin sodium was adsorbed on the(200) plane of nickel crystal,pref-erentially restricting the growth of Ni crystal thereon and resulting in crystal refining.

关 键 词：直流电沉积 纳米镍层 糖精钠 阴极极化 Tafel曲线 镀层组织 

分 类 号：TQ153.12[化学工程—电化学工业]