【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。更多还原

【Abstract】 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.更多还原