低合金高强度耐候钢Corten Cr2的耐腐蚀性

特殊钢 ›› 2012, Vol. 33 ›› Issue (2): 51-54.

低合金高强度耐候钢Corten Cr2的耐腐蚀性

赵平^1,3，苍大强^1,2黄运华⁴，刘青^1,2，窦志超^1,2，殷树春^1,2

1高效钢铁冶金国家重点实验室；
2冶金与生态工程学院，北京100083；
3中国镍资源控股有限公司，香港999077；
4北京科技大学材料科学与工程学院，北京100083
北京科技大学

收稿日期:2011-10-10 出版日期:2012-04-01 发布日期:2022-10-18
作者简介:赵平(1963-)，男，博士研究生，1987年沈阳大学毕业，钢铁冶金与企业管理

Corrosion Resistance of High Strength Low Alloy Weathering Steel Corten Cr2

Zhao Ping^1,3 , Cang Daqiang^1,2 , Huang Yunhua⁴ , Liu Qing^1,2 , Dou Zhichao^1,2 , Yin Shuchun^1,2

1 State Key Lab of Advanced Metallurgy,
2 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ;
3 China Nickel Resources Holding Co Ltd, Hong Kong 999077 ；
4 School of Materials Science and Engineering, University of Science and Technology, Beijing 100083;

Received:2011-10-10 Published:2012-04-01 Online:2022-10-18

摘要/Abstract

摘要： 通过盐雾箱加速腐蚀试验和交流阻抗的测试,研究了3mm板Corten A钢(/%:0.59C、0.16Si、0.31Mn、0.14P、0.009S、0.49Ni、0.52Cr、0.35Cu)和Corten Cr2钢(/%:0.59C、0.16Si、0.30Mn、0.14P、0.012S、1.00Ni、1.94Cr、0.36Cu)的耐腐蚀性,并用扫描电镜和能谱分析法分析了锈层、基体的组织、成分和耐蚀机理。结果表明,在5%氯化钠盐雾腐蚀120 h后Corten Cr2钢的平均腐蚀速率为Corten A钢的65.86%;Corten Cr2钢腐蚀层表面和钢板表面Cr原子百分比和氧化铬的富集程度均高于Corten A钢。

关键词: Corten Cr2耐候钢, 5%氯化钠, 盐雾, 耐腐蚀性, Cr含量

Abstract: The corrosion resistance of 3 mm sheet of steel Corten A (/% : 0.59C, 0.16Si, 0.31Mn, 0.14P, 0.009S, 0.49Ni, 0.52Cr, 0.35Cu) and steel Corten Cr2 (/% : 0.59C, 0.16Si, 0.30Mn, 0.14P, 0.012S, l.00Ni, 1.94Cr, 0.36Cu) is studied by using accelerated corrosion test salt fog chambers and measuring alternating current (AC) impedance method, and the structure morphology, analysis and corrosion resistance mechanism of rust layer and matrix are analyzed by using scanning electron microscope and energy dispersive spectrometer. Results show that with etching in 5% sodium chloride fog for 120 h, the average corrosion rate of steel Corten Cr2 is 65. 86% of that of steel Corten A ； the Cr atom percentage and chromium oxide rich extent at surface of corrosion layer and plate surface of steel Corten Cr2 are higher than that of steel Corten A.

赵平, 苍大强, 黄运华, 刘青, 窦志超, 殷树春. 低合金高强度耐候钢Corten Cr2的耐腐蚀性[J]. 特殊钢, 2012, 33(2): 51-54.

Zhao Ping , Cang Daqiang , Huang Yunhua , Liu Qing , Dou Zhichao , Yin Shuchun. Corrosion Resistance of High Strength Low Alloy Weathering Steel Corten Cr2[J]. Special Steel, 2012, 33(2): 51-54.

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