| Effect of pickling processes on the microstructure and properties of electroless Ni–P coating on Mg–7.5Li–2Zn–1Y alloy |
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| 作者姓名： | Chunjie Xu Liping Chen Ling Yu Jinxiao Zhang Zhongming Zhang Jincheng Wang |
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| 作者单位： | School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China;School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China;School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710049, China;School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710050, China;School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710051, China;State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China |
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| 基金项目： | financially supported by the fund of the key projects of Shaanxi provincial international technology cooperation plan(2013KW16);the scientific research program funded by Shaanxi provincial education department(2013JK0914);the state key laboratory of solidification processing in NWPU(SKLSP201115);the scientific research project of Xi’an University of Technology(2013CX004);the fund of the key laboratory of electrical materials and infiltration technology of Shaanxi province,China(2014) |
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| 摘 要： | The electroless plating Ni–P is prepared on the surface of Mg–7.5Li–2Zn–1Y alloys with different pickling processes.The microstructure and properties of Ni–P coating are investigated.The results show that the Ni–P coatings deposited using the different pickling processes have a different high phosphorus content amorphous Ni–P solid solution structure,and the Ni–P coatings exhibit higher hardness.There is higher phosphorus content of Ni–P amorphous coating using 125 g/L Cr O3and 110 ml/L HNO3(w68%)than using 180 g/L Cr O3and 1 g/L KF during pre-treatment,and the coating structure is more compact,and the Ni–P coatings exhibit more excellent adhesion with substrate(Fcup to22 N).The corrosion potential of Ni–P coating is improved and exhibits good corrosion resistance.As a result,Mg-7.5Li-2Zn-1Y alloy is remarkably protected by the Ni–P coating.
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| 关 键 词： | Magnesium–lithium alloy Pickling process Electroless plating Ni–P Corrosion resistance Electrochemical properties |
| 收稿时间： | 28 July 2014 |
Effect of pickling processes on the microstructure and properties of electroless Ni–P coating on Mg–7.5Li–2Zn–1Y alloy |
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| Chunjie Xu,Liping Chen,Ling Yu,Jinxiao Zhang,Zhongming Zhang,Jincheng Wang.Effect of pickling processes on the microstructure and properties of electroless Ni–P coating on Mg–7.5Li–2Zn–1Y alloy[J].Progress in Natural Science,2014,24(6):655-662. |
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| Authors: | Chunjie Xu Liping Chen Ling Yu Jinxiao Zhang Zhongming Zhang and Jincheng Wang |
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| Institution: | Chunjie Xu;Liping Chen;Ling Yu;Jinxiao Zhang;Zhongming Zhang;Jincheng Wang;School of Materials Science and Engineering, Xi’an University of Technology;State Key Laboratory of Solidification Processing, Northwestern Polytechnical University; |
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| Abstract: | The electroless plating Ni–P is prepared on the surface of Mg–7.5Li–2Zn–1Y alloys with different pickling processes. The microstructure and properties of Ni–P coating are investigated. The results show that the Ni–P coatings deposited using the different pickling processes have a different high phosphorus content amorphous Ni–P solid solution structure, and the Ni–P coatings exhibit higher hardness. There is higher phosphorus content of Ni–P amorphous coating using 125 g/L CrO3 and 110 ml/L HNO3 (w=68%) than using 180 g/L CrO3 and 1 g/L KF during pre-treatment, and the coating structure is more compact, and the Ni–P coatings exhibit more excellent adhesion with substrate (Fc up to 22 N). The corrosion potential of Ni–P coating is improved and exhibits good corrosion resistance. As a result, Mg-7.5Li-2Zn-1Y alloy is remarkably protected by the Ni–P coating. |
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| Keywords: | Magnesium–lithium alloy Pickling process Electroless plating Ni–P Corrosion resistance Electrochemical properties |
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