| Morphology and tribological properties of Ni/n-SiO_2 composite coatings by pulse-reverse current brush-plating |
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| 作者单位： | National Key Laboratory for Remanufacturing，Beijing 100072，China，National Key Laboratory for Remanufacturing，Beijing 100072，China，National Key Laboratory for Remanufacturing，Beijing 100072，China，Changsha Military Representative Office，Wuhan Bureau，General Armaments Department，Xiangtan 411104，China) |
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| 基金项目： | the National Natural Science Foundation of China，国家重点实验室基金 |
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| 摘 要： | 1INTRODUCTION Pulse reversecurrent(RC)platingisanew technologycomingwithpulsecurrent(PC)andre versecurrent.Onthisaspect,earlierstudiesmani festedthat16],intheconditionofRC,theeffectofelectricdoublelayerwasrestrained,thecontrol ofcrystallinegrowthwasenfor…
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Morphology and tribological properties of Ni/n-SiO2 composite coatings by pulse-reverse current brush-plating |
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| Authors: | TAN Jun GUO Wen-cai YANG Hong-jun ZHOU Liang |
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| Abstract: | Ni/n-SiO2 composite coating was electrodeposited by brush-plating with pulse-reverse current(RC). The morphology, hardness, and tririological properties of the coating were investigated and compared with those of Ni and composite coatings electrodeposited with direct current (DC). The results indicate that Ni/n-SiO2 composite coating electrodeposited by RC, because of RC and the nano powders, has denser coating, finer crystal grains, high er hardness(HV650. 0, nearly 1.5 times higher than that of Ni coating electrodeposited by DC) and lower friction coefficient(nearly 0.62), as a result, in the wearing experiment, the Ni/n-SiO2 composite coating electrodeposited by RC has the least worn loss. So this kind of coating has better wear resistance. And RC electro brush-plating can be used as a new technology of brush-plating in the area of wear resistance. |
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| Keywords: | pulse-reverse current(RC) brush-plating nano composite coating tribological property |
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