不同NaCl浓度对耐候钢腐蚀产物的影响
Influence of NaCl Concentration on Corrosion Products of Weathering Steel
摘 要
对Q450耐候钢在不同浓度NaCl溶液中模拟海洋大气环境进行了周期浸润试验.采用光学显微镜、扫描电镜和X射线衍射仪对钢的腐蚀形貌、锈层截面和腐蚀产物进行了观察和分析.结果表明:随着NaCl浓度的提高,锈层变得疏松多孔；不同浓度NaCl溶液中主要腐蚀产物相同,均为γ-FeOOH及少量Fe3O4.
耐候钢
锈层
周期浸润试验
atmospheric corrosion
weathering steel
rust
wet and dry cyclic corrosion test
Abstract
The atmospheric corrosion behavior of Q450 weathering steel was studied by the wet and dry cyclic corrosion tests in NaCl solutions with different concentrations.The corrosion preducts were observed and analyzed using OM,SEM and XRD.The results indicated that the rust layer became loosen with the increase of NaCl concentration.There were many cracks and holes in the rust layer with aggression of Cl-.γ-FeOOH and a small amount of Fe3O4 were found in the corrosion products.
中图分类号 TG172.3
所属栏目 试验研究
基金项目 科技部国家科技基础条件平台建设项目(No.2005DKA10400)
收稿日期 2008/4/24
修改稿日期 2008/10/6
网络出版日期
作者单位点击查看
引用该论文: HAO Xian-chao,SU Peng,XIAO Kui,DONG Chao-fang,LI Xiao-gang. Influence of NaCl Concentration on Corrosion Products of Weathering Steel[J]. Corrosion & Protection, 2009, 30(5): 297～299
被引情况:
【1】周萌,马春林,陆明,芦玉峰,楼淼,胡新东, "16MnR钢基纳米有机涂层的耐蚀性",腐蚀与防护 32, 704-707(2011)
【2】米丰毅,王向东,陈小平,彭云,陶东平, "高强度耐候H型钢和普通C-Mn低合金H型钢耐大气腐蚀性能比较",腐蚀与防护 32, 1-5(2011)
【3】陆忠华,周学俊,黄峰,朱腾威,姜鹏程,任光旭,张志伟, "轧制工艺对集装箱用SPA-H耐候钢耐蚀性能的影响",机械工程材料 37, 11-15(2013)
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参考文献
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【4】Hoerle S,Mazaudier F,Dillmann P,et al.Advances in understanding atmospheric corrosion of iron[J].Corrosion Science ,2004,46:1431-1465.
【5】刘丽宏,齐慧滨,卢燕平,等.耐大气腐蚀钢的研究概况[J].腐蚀科学与防护技术,2003,15(2):86-89.
【6】张全成,吴建生,陈家光,等.近海大气中耐侯钢和碳钢抗腐蚀性能的研究[J].材料科学与工程,2001,19(2):13-16.
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【11】王建军,郭小丹,郑文龙,等.海洋大气暴露3年的碳钢与耐候钢表面锈层分析[J].腐蚀与防护,2002,23(7):288-291.
【12】杨德钧,沈卓身.金属腐蚀学(第2版)[M].北京:冶金工业出版社,2003:96-100.
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