ZHANG Xin,ZHANG Xiu-zhi,ZHU Hua-jun,KONG Huan-ming,LIU Pei-pei.Study on the Plating Process of Ni-SiO2 Coating for AZ91 Magnesium Alloys[J],(4):68-70 |
Study on the Plating Process of Ni-SiO2 Coating for AZ91 Magnesium Alloys |
Received:February 07, 2012 Revised:August 20, 2012 |
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KeyWord:magnesium alloy nano-sized composite electroplating micro-hardness corrosion resistance |
Author | Institution |
ZHANG Xin |
Taiyuan University of Science and Technology, Taiyuan , China |
ZHANG Xiu-zhi |
Taiyuan University of Science and Technology, Taiyuan , China |
ZHU Hua-jun |
Taiyuan University of Science and Technology, Taiyuan , China |
KONG Huan-ming |
Taiyuan University of Science and Technology, Taiyuan , China |
LIU Pei-pei |
Taiyuan University of Science and Technology, Taiyuan , China |
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Abstract: |
The nano-sized Ni-SiO2 coating was prepared on AZ91 magnesium alloys by composite electroplating, and the effect of process parameter on the coating was studied and the optimum process was obtained. The results show that the surface of the coating is smooth and the coating posesses the best micro-hardness and corrosion resistance when the content of nano-sized SiO2 and activator is 20 g/L and 1 g/L in the electroplating bath with pH value 5~6, respectively, and the electrodepositing time is 20~30 min at 50℃ and the the cathodic current density is 1 A/dm2. |
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