在氨基乙酸为络合剂的水溶液中采用恒电位法沉积出Co-La薄膜,分别研究了pH、沉积电位对镀层结构的影响.结果表明,在镀液pH=4.5时随沉积电位负移,镀层中La含量先增后减;当沉积电位为-1.050 V(vs. SCE),镀液pH值从4.05至4.90变化时,镀层中La含量增大.循环伏安实验证实:Co-La沉积属诱导共沉积.采用XRD研究了镀层的晶化行为,结果表明:镀态镀层含有Co(hcp)相和非晶相,700℃热处理后晶化为Co-La(fcc)固溶体和Co13La合金相.电化学实验表明,Co-La电极比纯Co电极具有更好的析氢电催化活性.Co-La薄膜具有优异的硬磁性能.
参考文献
| [1] | Pawar S H;Pendse M H .[J].Materials Research Bulletin,1991,26(07):641. |
| [2] | Lokhande C D;Jundale S B .[J].Materials Chemistry and Physics,1991,27(03):265. |
| [3] | Jundale S B;Lokhande C D .[J].Materials Chemistry and Physics,1994,37:333. |
| [4] | Gong J;Podlaha E J .[J].Electrochemical and Solid-State Letters,2000,3(09):422. |
| [5] | Schwartz M;Myung N V;Nobe K .[J].Journal of the Electrochemical Society,2004,151(07):468. |
| [6] | Jianqi Zhang;Paul Evans;Giovanni Zangari .[J].Journal of Magnetism and Magnetic Materials,2004,283:89. |
| [7] | 刘淑兰;覃奇贤;成旦红 et al.[J].物理化学学报,1995,11(12):1110. |
| [8] | 史鸿运,邓洁,张云黔,董俊.电沉积法制备钴与镧、铈的非晶态合金及其晶化动力学研究[J].无机材料学报,2002(06):1124-1128. |
| [9] | 王玲玲,唐黎明,黄桂芳,黄维清,彭军,M.Fukumoto.水溶液中电沉积非晶态Ni-RE-P（RE=Ce,Nd）稀土合金[J].稀有金属材料与工程,2004(07):687-691. |
| [10] | 沈琤;黄清安;吴俊 .[J].电镀与精饰,2000,22(06):1. |
| [11] | Lokhande C D.[J].Reviews in Solid State and Materials Sciences,1988(02):373. |
| [12] | Kayasth S .[J].Journal of Radioanalytical and Nuclear Chemistry,1993,173(02):351. |
| [13] | Jovic V D;Zejnilovic R M;Despic A R et al.[J].Journal of Applied Electrochemistry,1988,18:511. |
| [14] | Ezaki H;Morinaga M;Watanabe S .[J].Electrochimica Acta,1993,38(04):557. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%