Ni-P coating on AZ31 magnesium alloy and its crystallization

Amorphous Ni-P coating was plated on AZ31 magnesium alloy via the electroless plating technique, and the plated alloy was subsequently annealed. X-ray dif- fraction （XRD）, scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）, and differential scanning calorimetry （DSC） were used...

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Bibliographic Details
Published in:Rare metals 2013-10, Vol.32 (5), p.465-468
Main Authors: Wang, Chun-Mei, Wang, Jian-Qing, Zhang, Bing, Niu, Run-Bing, Yu, Jin-Ku, Jing, Qin
Format: Article
Language:English
Subjects:
AZ31镁合金
Biomaterials
Chemistry and Materials Science
Energy
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Ni-P镀层
Physical Chemistry
X射线衍射
差示扫描量热法
扫描电子显微镜
结晶化
耐腐蚀性
能量色散谱
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Summary:Amorphous Ni-P coating was plated on AZ31 magnesium alloy via the electroless plating technique, and the plated alloy was subsequently annealed. X-ray dif- fraction （XRD）, scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）, and differential scanning calorimetry （DSC） were used to characterize the coating. The results show that the hardness of the coating is much higher than that of bare magnesium alloy, which further increases after crystallization. The electrochemical polarization and salt spray tests show that the coating exhibits a much higher corrosion resistance than that of the bare magnesium alloy. Moreover, the crystallized coating still exhibits a much stronger corrosion resistance than that of the bare magnesium alloy, although its corrosion resistance is lower than that of the as-plated one.
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-013-0054-9