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报道了从水溶液中电沉积稀土含量高于30%的Ni-RE-P(RE=Ce,Nd)合金,其中Ni-P,Ni-Ce-P及Ni-Nd-P合金镀层均为非晶态结构,玻璃化温度约为385℃;用DTA测定了3种合金的晶化活化能分别为523.3kJ/mol,574.4kJ/mol,558.9kJ/mol;利用二维Miedema坐标(φ和3/1ws-n)以及加入尺寸因素(R/RA)构成的三维化学坐标分析了合金的非晶形成规律,探讨了实现稀土合金电沉积的途径,具体为选择适当的络合剂、合适的电极材料及合适的共沉积元素。
It is reported that Ni-RE-P (RE = Ce, Nd) alloys with electrodeposited rare earth content higher than 30% were obtained from aqueous solutions. The Ni-P, Ni-Ce-P and Ni-Nd-P alloy coatings were all amorphous The activation energies of the three alloys were 523.3 kJ / mol, 574.4 kJ / mol and 558.9 kJ / mol, respectively. The two-dimensional Miedema coordinates (φ and 3 / 1ws-n) as well as the three dimensional chemical coordinates formed by the addition of size factor (R / RA) were used to analyze the amorphous formation of the alloy. The ways to realize the electrodeposition of the rare earth alloy were discussed. The proper choice of complexing agent, And a suitable co-deposition element.