Surface treatment and nickel plating of iron powder metallurgy parts for corrosion protection

被引：13
|
作者：
Etaat, M. [1 ]
Emamy, M. [1 ]
Ghambari, M. [1 ]
Fadaei, E. [1 ]
机构：
[1] Univ Tehran, Sch Met & Mat Engn, Tehran 553, Iran
来源：
MATERIALS & DESIGN | 2009年 / 30卷 / 09期
关键词：
Powder metallurgy; Surface treatments; Nickel plating; Corrosion; P/M PARTS; COMPACTS;
D O I：
10.1016/j.matdes.2009.02.029
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of this study is the evaluation of corrosion behavior of nickel coated iron compacts produced by powder metallurgy (PM). To improve the quality of PM products three different secondary operations: copper infiltration, resin impregnation and steam-treatment were applied for pore closuring of iron PM specimens before being electroplated by nickel. After microstructural studies, salt fog exposure and electrochemical tests were carried out to study the corrosion behavior of the nickel coated specimens. The results showed that, nickel coated steam treated specimens exhibit better performance on corrosion testing in comparison with others. Although copper infiltrated specimens showed less porosity in PM products, observed limited corrosion behavior can be due to its galvanic effect. (C) 2009 Elsevier Ltd. All rights reserved.
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页码：3560 / 3565
页数：6
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