Zn-Ni alloy coatings pulse-plated on magnesium alloy

被引：33
|
作者：
Jiang, YF [1 ]
Zhai, CQ [1 ]
Liu, LF [1 ]
Zhu, YP [1 ]
Ding, WJ [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Natl Engn Res Ctr Light Alloys Net Forming, Shanghai 200030, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2005年 / 191卷 / 2-3期
关键词：
Zn-Ni alloy coating; magnesium alloy; pulse-plating; corrosion behavior;
D O I：
10.1016/j.surfcoat.2004.03.046
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Zn-Ni alloy coatings are plated on AZ91 magnesium alloy using a pulse potential after an appropriate pretreatment. The current density, frequency, t(on)/t(off) and time have effects on thickness, morphology. Ni content, microhardness and anticorrosion of Zn-Ni coatings. Corrosion can reach above 200 h in salt spray test according to ASTM B117: the corrosion behavior of coatings is interfacial corrosion of particles and results in particle degradation as observed by scanning electron microscopy. Weight loss method and polarization curves are also used to investigate anticorrosion properties. Bonding strength is above 14.8 Mpa in adhesive tensile tests. (C) 2004 Elsevier B.V. All fights reserved.
引用
收藏
页码：393 / 399
页数：7
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