ＬＴＮＦ常温Ｎｉ－Ｆｅ合金镀层的耐蚀原因分析黄树坤，邹振华，邝少林（湖南大学化学化工系长沙４１００８２）肖觉民，吴力军（湖南大学材料测试中心）１前言通常的瓦特镀镍工艺在常温下得到的镍镀层发暗，应力大且耐蚀性差，不宜作为防护装饰性镀层使用．我们曾提出一种节能、省镍的ＬＴＮＦ常温Ｎｉ－Ｆｅ合金电镀工艺［１］，由该工艺得到的镀层不但光亮，而且应力低，耐蚀性优良，可作为防护装饰性镀层使用．本文报导关?...
Ni-Fe electrodeposits obtained at ambient temperature possess superior corrosion resistance. Its cause was experimentally investigated by means of electronmicroscopy and X-ray distraction analysis. The results showed that both low-iron (5～7Wt%) and high-iron (20～25wt%) alloy deposits were homogeneous nickel-base solid solutiolls. In these deposits lower internal stress, smaller grain size and (100) texture me those obtained in the Watts nickel electrodeposit were obserVed. Besides, a lamellar structure composed of iron-rich and iron-depleted zones alternately made up a galvanic corrosion system which may prevent the underneath steel substrate from corrosion.
参考文献
| [1] | 邝少林,黄树坤,邹震华．中国技术成果大全,94-99,中国技术成果大全编辑部编,北京:科学技术文献出版社,1992．p392邝少林等．湖南大学学报,1987,14(2):13531975,11:16894AmblardJ,etal．J．AppLElectrochem,1979,9:23351981,17:7196HadleyJ,O'GradyJ．Thans．Inst．Met．Finish,1981,part37屠振密．电镀合金原理与工艺,北京:国防工业出版社,1993,p．92-93 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%