Corrosion behaviour of zinc-nickel alloy coatings electrodeposited in additive free chloride baths

被引：9
|
作者：
Khan, R. [1 ]
Mehmood, M. [1 ]
Rizwan, R. [1 ]
Ahmad, J. [1 ]
Ul Hasan, M. [1 ]
Iqbal, Z. [1 ]
Mudassar, T. [1 ]
Aslam, M. [1 ]
机构：
[1] Pakistan Inst Engn & Appl Sci, Dept Chem & Mat Engn, Natl Ctr Nanotechnol, Islamabad 45650, Pakistan
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2011年 / 46卷 / 07期
关键词：
Zinc-nickel alloy coatings; Salt spray test; Nanocrystallinity; HETEROGENEITY; RESISTANCE; SIZE;
D O I：
10.1179/147842210X12741768645794
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Corrosion behaviour of nanocrystalline Zn-Ni alloy coatings (with 3 to 18 at-%Ni) electrodeposited on steel substrate from additive free chloride baths by DC plating has been investigated by measurement of open circuit potential with time and neutral salt spray test. The alloy coatings containing up to 16 at-%Ni exhibited an increase in resistance to the appearance of white and red rust with increasing Ni content. The resistance to the appearance of white rust and ability to protect the underlying steel substrate decreased with further increasing Ni content. This has been considered to be due to reduced passivating ability of the alloy coating with a significant rise in the grain size above 50 nm.
引用
收藏
页码：755 / 761
页数：7
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