【作者】 彭军； 王玲玲； 唐黎明； 高学宝；

【Author】 Peng Jun, Wang Lingling, Tang Liming, Gao Xuebao (Department of Applied Physics, Hunan University, Changsha 410082 , China )

【机构】 湖南大学应用物理系；

【摘要】 稀土元素的还原电位很负,在水溶液中很难沉积。如何使其正移是实现稀土合金电镀的关键。分析了络合剂对稀土合金电沉积的影响,恰当的络合剂不但起到稳定镀液的作用,而且能使稀土的沉积电位显著正移。研究了非晶态合金电沉积的特点,利用二维Miedema坐标(△φ*和△nws-1/3)以及加入尺寸因素(△R/RA)构成的三维化学坐标分析了水溶液电沉积非晶态稀土合金的形成规律。更多还原

【Abstract】 Rare earth elements have lower reducing potentials than that of hydrogen which makes them difficult to deposit from aqueous solutions. How to make them shifted positively is very important. The effect of complex agent on the electrodeposition of rare earth alloys was studied. Proper complex agent can stabilize the solutions and obviously make the potential shiftedpositively. Meanwhile, the character of electrodeposi-tion amorphous alloys was investigated. In addition, the regularity of formation of the amorphous rare earth alloys in aqueous bath was studied by plotting two dimensional figure with Miedema’s coordinates Δ * and Δnws-1/3 and three dimensional figure with chemical coordinates adding the size factor ΔR/RA.更多还原