| ZHANG Dao-jun,SHAO Hong-hong,JIANG Xiao-yan.Investigation of Electroless Plating on A231 Magnesium Alloys[J],36(4):54-56 |
| Investigation of Electroless Plating on A231 Magnesium Alloys |
| Received:March 23, 2007 Revised:August 10, 2007 |
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| DOI： |
| KeyWord:A231 Magnesium Alloys Ni-P Alloys Electroless plating Adherence |
| Author | Institution |
| ZHANG Dao-jun |
School of Materials Science and Engineering, Jiangsu University, Zhenjiang , China |
| SHAO Hong-hong |
School of Materials Science and Engineering, Jiangsu University, Zhenjiang , China |
| JIANG Xiao-yan |
School of Materials Science and Engineering, Jiangsu University, Zhenjiang , China |
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| Abstract: |
| Direct electroless Ni-P plating on the A231 magnesium alloys in a plating bath containing nickel carbonate was investigated. The morphology and microstructure of the electroless Ni-P coating were studied by SEM and XRD. The electroless Ni-P coating was compact and no obvious defects. The hardness value of the Ni-P coatings was 566 HV and the phosphorus content of this coating was about 9. 77 wt% . The deposition rate of the electroless Ni-P alloys was about 0. 32μm/ h. The acid pickle pretreatment on the A231 magnesium alloy substrate provides surface pits to act as sites for mechanical interlocking to improve adhesion between the coating and the substrate. The adherence of them is 22No |
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