喷射电沉积和激光重熔改善纳米Ni涂层的腐蚀行为

IF 1.5 Q4 ELECTROCHEMISTRY

International Journal of Corrosion Pub Date : 2018-07-02 DOI:10.1155/2018/2786429

H. Fan, Yangpei Zhao, Shankui Wang

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引用次数: 1

摘要

介绍了一种提高不锈钢（1Cr18Ni9）镍镀层耐蚀性的有效方法。采用喷射电沉积技术在1Cr18Ni9上预沉积了镍涂层。然后对预沉积的Ni涂层进行激光重熔，以增强涂层的微观结构以及基体与Ni涂层之间的界面。实验结果表明，在40A/dm2的电流密度下，沉积的涂层由于晶粒细化和内部结构致密而具有最佳的耐腐蚀性。激光重熔后，涂层与基体的结合状态由原来的机械结合演变为新的冶金结合。腐蚀速率比较表明，喷射电沉积和激光重熔复合工艺的Ni涂层比裸露的1Cr18Ni9和喷射电沉积的Ni涂层具有更高的耐蚀性。

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Improvement of Corrosion Behavior of Nanostructured Ni Coating by Jet Electrodeposition and Laser Remelting

An effective method to improve corrosion resistance for the nickel coating on the stainless steel(1Cr18Ni9) is described. The nickel coating was predeposited on the 1Cr18Ni9 by using the jet electrodeposition technology. Then the laser remelting was conducted on the predeposited Ni coating in order to strengthen the coating’s microstructure and the interface between the substrate and the Ni coating. The experimental results revealed that, at current density of 40 A/dm2, the deposited coating had the optimal corrosion resistance because of refined grains and dense interior-structure. After laser remelting, the bonding state between the coating and substrate evolved to a new metallurgical combination from originally mechanical combination. The corrosion rate comparison indicated that Ni coating with compound process of jet electrodeposition and laser remelting had higher corrosion resistance compared with bare 1Cr18Ni9 as well as jet electrodeposited Ni coating.

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来源期刊

International Journal of Corrosion ELECTROCHEMISTRY-

CiteScore

5.70

自引率

0.00%

发文量

审稿时长

14 weeks