化学镀Ni-P合金镀层在低温模拟海水中的腐蚀性能

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英文篇名：Corrosion Resistance of Electroless Ni-P Alloy Coating in Simulated Seawater at Low Temperature 作者：王伟龙 ; 房婷 ; 逄旭光 ; 张云霞 ; 吴江华 ; 梁平 英文作者：WANG Weilong;FANG Ting;PANG Xuguang;ZHANG Yunxia;WU Jianghua;LIANG Ping;School of Mechanical Engineering, Liaoning Shihua University;Continual Education Institute, Liaoning Shihua University; 关键词：化学镀Ni-P合金镀层 ; 低温 ; 海水 ; 耐蚀性 英文关键词：electroless Ni-P alloy coating;;low temperature;;seawater;;corrosion resistance 中文刊名：DDHB 英文刊名：Electroplating & Pollution Control 机构：辽宁石油化工大学机械工程学院;辽宁石油化工大学继续教育学院; 出版日期：2019-05-30 出版单位：电镀与环保 年：2019 期：v.39;No.227 基金：2017年辽宁省大学生创新创业训练计划项目(201710148000035);; 2013年度辽宁省普通本科高等学校实验教学示范中心建设项目;; 辽宁省石油化工先进装备工程技术研究中心项目 语种：中文; 页：DDHB201903010 页数：4 CN：03 ISSN：31-1507/X 分类号：27-30

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。
        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.

引文

[1] 侯保荣,张盾,王鹏.海洋腐蚀防护的现状与未来[J].中国科学院院刊,2016,31(12):1326-1331.
    [2] LIN L Y,ZHAO Y H.Intergranular precipitation of copper-nickel alloys induced by seawater corrosion[J].Chinese science bulletin,2009,54(19):3458-3463.
    [3] 张超智,李世娟,沈丹,等.氟涂料在海洋防腐中应用的研究进展[J].腐蚀科学与防护技术,2016,26(6):555-558.
    [4] LIU B,FANG Z G,WANG H B,et al.Effect of cross linking degree and adhesion force on the anti-corrosion performance of epoxy coatings under simulated deep sea environment[J].Progress in organic coatings,2013,76(12):1814-1818.
    [5] 郑春凡.海洋腐蚀环境下管道防腐方案比较[J].石油化工设备技术,2011,32(1):29-31.
    [6] 吴春,刘祥萱,黄洁.化学镀在电磁屏蔽中的应用[J].电镀与环保,2010,30(2):8-10.
    [7] 郝龙,程庆,黄文全,等.不锈钢化学镀Ni-P合金在H2SO4溶液中的腐蚀行为[J].中国腐蚀与防护学报,2009,29(1):55-58.
    [8] 曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002.·书讯·