期刊论文

中文

化学研究与应用

1004-1656

2003

15

4

535-537

10.3969/j.issn.1004-1656.2003.04.029

本校为第一机构

由于稀土元素具有独特的电子层结构和化学性能,使稀土及其化合物在材料科学领域中的应用越来越广泛,尤其是稀土在电沉积过程中的研究及应用正日趋深入.这是因为在电镀溶液中加入少量的稀土化合物后,可以改善镀液的分散能力和深镀能力,提高电镀的电流效率,增加镀层的硬度和耐蚀性等[1-4],但有关稀土在电沉积镍-钴合金中的作用的研究还未见报道.本文研究了在硫酸盐体系镍-钴合金电镀液中加入少量的稀土化合物后对电沉积过程、合金电极的催化性能、合金镀层的形貌和成分的影响.

Mechanism of electrodeposition nickelcobalt alloy and electrocatalytic properties of hydrogen evolution of nickelcobalt obtained in a sulfate bath with or without rare earth compounds were studied.The experimental results showed that the process of nickelcobalt alloy belonged to'anomalous codeposition'.By measuring the cathodic polarization curves,the surface structure and the components of nickelcobalt alloy,when a small amount of rare earth compounds was added to the bath,the cathodic polarization of electrodepositing process was decr...