三种电弧喷锌防护涂层在3.5％ NaCl溶液中的耐蚀性
Corrosion Resistance of Three Arc-sprayed Zinc Coatings in 3.5% NaCl Solution
摘 要
采用电弧喷涂技术在Q235钢基体上制备出纯锌、Zn-Al合金和Zn-Al伪合金涂层。通过浸泡试验和电化学测试考察涂层在3.5％ NaCl溶液中的腐蚀行为, 并结合扫描电镜(SEM)和X射线衍射仪(XRD)分析了涂层腐蚀后的表面形貌及腐蚀产物的相结构。结果表明, 在3.5％ NaCl溶液中三种涂层的耐腐蚀性按Zn-Al伪合金涂层、Zn-Al合金涂层、Zn涂层的顺序依次降低。
涂层
耐蚀性
动电位极化
arc spraying
coating
corrosion resistance
potentiodynamic polarization
Abstract
Pure Zn, Zn-Al alloy and Zn-Al pseudo-alloy coatings were prepared on Q235 steel surface by arc spraying technique. The corrosion resistance of these coatings was investigated by immersion testing and electrochemical measurements in 3.5% NaCl solution. The surface morphology of the samples after test and the phase composition of corrosion products were analyzed by using electron microscopy (SEM) and X-ray diffraction (XRD). The results show that the corrosion resistance of the coatings decreased sequentially in the order of Zn-Al pseudo alloy coating, Zn-Al alloy coating, and pure Zn coating.
中图分类号 TG174.44
所属栏目 试验研究
基金项目 国家自然科学基金项目(No.50871021)
收稿日期 2011/6/26
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网络出版日期
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备注刘安强, 博士研究生,
引用该论文: LIU An-qiang,XIAO Kui,DONG Chao-fang,WANG En-qing,XIN Shao-guang,WEI Dan,LI Xiao-gang. Corrosion Resistance of Three Arc-sprayed Zinc Coatings in 3.5% NaCl Solution[J]. Corrosion & Protection, 2012, 33(4): 276
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参考文献
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【3】李言涛, 侯保荣. 海洋环境下热喷涂锌、铝及其合金涂层防腐蚀机理研究概况[J]. 材料保护, 2005, 38(9):30-34.
【4】徐滨士, 马世宁, 刘世参, 等. 绿色再制造工程在军用装备中的应用[J]. 空军工程大学学报, 2004, 5(1):1-5.
【5】柯伟. 中国腐蚀调查报告[M]. 北京:化学工业出版社, 2003.
【6】Kong A M. Application study of TSA anticorrosion technology in the offshore platform[J]. Total Corrosion Control, 2008, 22(4):32-34.
【7】Wang De-kui, Shen Cheng-jin, Jia Zhi-yong. Corrosive behavior of thermal sprayed zinc coating under asphalt concrete coat on steel bridge deck[J]. Corrosion and Protection, 2007, 28(9):445-448.
【8】袁涛, 贺定勇, 蒋建敏. 钢结构热喷涂长效防腐蚀技术的研究与发展[J]. 腐蚀与防护, 2008, 29(4):207-210.
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【10】Fischer K P, Thomason W H, Rosbrook T, et al. Performance history of thermal-sprayed aluminum coatings in off shore service[J]. Materials Performance, 1995, 34(4):27-35.
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