| Ni-Cr alloy electrodepositing technology on Fe substrate and coating performance |
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| 作者姓名： | 许利剑 龚竹青 汤建新 贺全国 何龙跃 杜晶晶 |
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| 作者单位： | [1]School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China [2]Green Packaging and Biological Nanotechnology Laboratory, Hunan University of Technology, Zhuzhou 412008, China |
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| 摘 要： | The Ni-Cr alloy electrodepositing technology on iron substrate in the chlorid-sulfate solution and the impacts of main processing parameters on coating composition were studied. The optimal Ni-Cr alloy electrodepositing conditions are that the cathode current density is 16 A/dm^2, the plating solution temperature is 30 ℃ and the pH value is 2.5. The bright, compact coating gained under the optimal conditions has good cohesion and 24.1% Cr content. The results show that the coating is composed of crystalline, the average grain size is 82 nm and the higher the Cr content of coating, the larger the rigidity, and the higher the corrosion resistance. The rigidity of coating reaches 78.6（HR30T） and the passivation area broadens to 1.4 V when the Cr content of coating is 24.1%.
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| 关 键 词： | 镍-铬合金电沉积技术 铁基底 电镀 镀层性能 |
| 收稿时间： | 2006-05-21 |
| 修稿时间： | 2006-07-27 |
Ni-Cr alloy electrodepositing technology on Fe substrate and coating performance |
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| Xu Li-jian , Gong Zhu-qing , Tang Jian-xin , He Quan-guo , He Nong-yue and Du Jing-jing.Ni-Cr alloy electrodepositing technology on Fe substrate and coating performance[J].Journal of Central South University of Technology,2007,14(2):181-185. |
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| Authors: | Xu Li-jian Gong Zhu-qing Tang Jian-xin He Quan-guo He Nong-yue and Du Jing-jing |
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| Affiliation: | (1) School of Metallurgical Science and Engineering, Central South University, Changsha, 410083, China;(2) Green Packaging and Biological Nanotechnology Laboratory, Hunan University of Technology, Zhuzhou, 412008, China |
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| Abstract: | The Ni-Cr alloy electrodepositing technology on iron substrate in the chlorid-sulfate solution and the impacts of main processing
parameters on coating composition were studied. The optimal Ni-Cr alloy electrodepositing conditions are that the cathode
current density is 16 A/dm2, the plating solution temperature is 30 °C and the pH value is 2.5. The bright, compact coating gained under the optimal
conditions has good cohesion and 24.1% Cr content. The results show that the coating is composed of crystalline, the average
grain size is 82 nm and the higher the Cr content of coating, the larger the rigidity, and the higher the corrosion resistance.
The rigidity of coating reaches 78.6(HR30T) and the passivation area broadens to 1.4 V when the Cr content of coating is 24.1%.
Foundation item: Project (59674025) supported by the National Natural Science Foundation of China |
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| Keywords: | electrodeposition plating Ni-Cr alloy corrosion resistance |
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