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化学镀Ni-P合金镀层在低温模拟海水中的腐蚀性能
引用本文:王伟龙,房婷,逄旭光,张云霞,吴江华,梁平.化学镀Ni-P合金镀层在低温模拟海水中的腐蚀性能[J].电镀与环保,2019,39(3):22-25.
作者姓名:王伟龙  房婷  逄旭光  张云霞  吴江华  梁平
作者单位:辽宁石油化工大学机械工程学院,辽宁抚顺,113001;辽宁石油化工大学继续教育学院,辽宁抚顺,113001
基金项目:辽宁省大学生创新创业训练计划;辽宁省普通本科高等学校实验教学示范中心建设项目;工程技术研究中心项目
摘    要:为了改善Q235钢在低温海水中的耐蚀性,在Q235钢表面化学镀Ni-P合金镀层。采用显微镜观察了镀层的表面形貌,采用X射线衍射仪分析了镀层的结构,并通过浸泡试验、极化曲线和电化学阻抗等方法考察了Q235钢和镀层在5℃的模拟海水中的耐蚀性。结果表明:化学镀Ni-P合金镀层表面的胞状物分布较为均匀,镀层为非晶态结构,镀层在低温海水中的腐蚀速率约为Q235钢的1/5。这主要与该镀层在海水中能够发生钝化及镀层表面较为致密有关。

关 键 词:化学镀Ni-P合金镀层  低温  海水  耐蚀性

Corrosion Resistance of Electroless Ni-P Alloy Coating in Simulated Seawater at Low Temperature
WANG Weilong,FANG Ting,PANG Xuguang,ZHANG Yunxia,WU Jianghua,LIANG Ping.Corrosion Resistance of Electroless Ni-P Alloy Coating in Simulated Seawater at Low Temperature[J].Electroplating & Pollution Control,2019,39(3):22-25.
Authors:WANG Weilong  FANG Ting  PANG Xuguang  ZHANG Yunxia  WU Jianghua  LIANG Ping
Affiliation:(School of Mechanical Engineering,Liaoning Shihua University,Fushun 113001,China;Continual Education Institute,Liaoning Shihua University,Fushun113001,China)
Abstract:In order to improve the corrosion resistance of Q235 steel in seawater at low temperature,Ni-P alloy coating was deposited on the surface of Q235 steel by electroless plating.The surface morphology of the coating was observed by microscope,the structure of the coating was analyzed by X-ray diffractometer,and the corrosion resistance of Q235 steel and the coating in simulated seawater at 5℃was investigated by immersion test,polarization curve and electrochemical impedance spectroscopy.The results showed that the cellular objects distributed uniformly on the surface of electroless Ni-P alloy coating,and the coating was amorphous.Corrosion rate of the coating in low-temperature seawater was about 1/5 of that of Q235 steel,which was mainly related to the passivation of the coating in seawater and the relatively dense surface of the coating.
Keywords:electroless Ni-P alloy coating  low temperature  seawater  corrosion resistance
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