| JIN Yong-zhong,YANG Kui,ZENG Xian-guang,NI Tao,DING Song.Influence of Plating Temperature on the Morphology, Hardness and Corrosion Resistance of Electroless Ni-P Alloy Plating[J],44(4):23-26,31 |
| Influence of Plating Temperature on the Morphology, Hardness and Corrosion Resistance of Electroless Ni-P Alloy Plating |
| Received:November 05, 2014 Revised:April 20, 2015 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2015.04.004 |
| KeyWord:electroless plating Ni-P alloy coating morphology corrosion resistance hardness |
| Author | Institution |
| JIN Yong-zhong |
School of Material and Chemical Engineering, Sichuan University of Science & Engineering, Zigong , China |
| YANG Kui |
School of Material and Chemical Engineering, Sichuan University of Science & Engineering, Zigong , China |
| ZENG Xian-guang |
School of Material and Chemical Engineering, Sichuan University of Science & Engineering, Zigong , China |
| NI Tao |
School of Material and Chemical Engineering, Sichuan University of Science & Engineering, Zigong , China |
| DING Song |
School of Material and Chemical Engineering, Sichuan University of Science & Engineering, Zigong , China |
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| Abstract: |
| Objective The variation trend of surface morphology of the Ni-P alloy coating was studied in the plating temperature range of 70 ~95 ℃. In addition, the correlations between alloy hardness, corrosion resistance and surface morphology were discussed. Methods Ni-P alloy coatings were prepared by chemical deposition at different plating temperatures. The surface morphology of Ni-P coatings was characterized by SEM. The hardness of Ni-P coatings was determined. And the corrosion resistance of Ni-P coatings was also characterized by the relative corrosion rate through soaking the samples in chlorhydric acid. Results In the plating temperature range of 70 ~95 ℃, with the increase of the deposition temperature, the surface morphology of Ni-P coatings tended to be denser and smoother at first and then surface coarsening occurred. Both the hardness and corrosion resistance of the Ni-P coatings first increased and then decreased with the increasing deposition temperature. The best surface morphology and the maximum hardness were obtained at 85 ℃ and the deposition temperature range for good corrosion resistance was 85 ~90 ℃. Conclusion The Ni-P coatings with flat, dense and smooth surface, high hardness and good corrosion resistance were prepared at 85 ℃ for 3 h when the solution pH value was 4. 5±0. 1. |
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