The influence of pulse parameters on Zn-Ni alloy coatings plated on AZ91 magnesium alloy

被引：2
|
作者：
Jiang, YF [1 ]
Guo, XW [1 ]
Zhai, CQ [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：
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING | 2003年 / 81卷
关键词：
magnesium alloys; zinc-nickel alloy coatings; pulse current; phase; morphology;
D O I：
10.1080/00202967.2003.11871536
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The influence of pulse parameters on zinc-nickel coatings plated on AZ91 agnesium alloy is investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The particles of zinc-nickel alloy plated on AZ91 magnesium alloy become smaller and the surface roughness decreases with the increase of current density and frequency However, long plating times and a high ratio of t(on) /t(off) have decremental effects on the particles and surface roughness. The contents of ctystal phase'S of zinc-nickel alloy coatings are higher tinder pulse current deposition than under direct current. The frequency, current density, plating time and ratio of t(on) /t(off) have different impacts on the thickness and Ni content of zinc-nickel coatings.
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页码：182 / 185
页数：4
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