| 田志强,王崇碧,孔小东,王源升.锈层对船体钢耐腐蚀性能影响研究[J].装备环境工程,2012,9(3):66-70. TIAN Zhi-qiang,WANG Chong-bi,KONG Xiao-dong,WANG Yuan-sheng.Effect of Rust Layer on Corrosion Resistance of Hull Steel[J].Equipment Environmental Engineering,2012,9(3):66-70. |
| 锈层对船体钢耐腐蚀性能影响研究 |
| Effect of Rust Layer on Corrosion Resistance of Hull Steel |
| 投稿时间：2012-03-07 修订日期：2012-06-15 |
| DOI： |
| 中文关键词: 船体钢 锈层 腐蚀形貌 |
| 英文关键词:hull steel rust layer corrosion morphology |
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| 中文摘要: |
| 选择5种不同类型的船体钢， 在3%（质量分数）NaCl溶液中浸泡1 a， 用金相显微镜观察内、 外锈层形貌特征和腐蚀形貌， 分析锈层下钢的腐蚀特征； 记录自腐蚀电位 （OCP） 的变化， 评价锈层对腐蚀倾向性的影响； 利用电子探针 （EMPA） 分析锈层的形貌和内锈层元素分布； 通过计算质量损失得到钢的平均腐蚀速率。结果表明， 外锈层对钢腐蚀的影响较小； 内锈层的缺陷与钢腐蚀形貌中的腐蚀坑对应； 当钢中的Ni和Cr元素含量较高时， 由于Cr元素在其内锈层和基体交界面富集， 其平均腐蚀速率最小。 |
| 英文摘要: |
| Five different types of hull steel were immersed in 3%NaCl solution for one year; the morphologies of inner and outer rust layers and the corrosion morphologies were obtained by metallographic microscope; and the corrosion characteristics of steel under rust layer were analyzed. The change in corrosion potential (OCP) were recorded for evaluation of influence of rust layer on corrosion tendency; the rust layer morphology and element distribution in inner layers were analyzed by means of electron probe micro-analyzer (EMPA). Average corrosion rate of steels was got by weight loss calculation. The results showed that outer rust layers have little influence on steels corrosion; the corrosion pits seen from steels corrosion morphology corresponds to defects in the inner rust layers; minimum of average corrosion rate is caused by the enrichment of Cr element in the inner rust layer and matrix cross-interface when steel has higher Ni and Cr content. |
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