| 稀土对X70管线钢腐蚀行为的影响 |
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| 引用本文： | 杨吉春,左立杰,赵丙新,聂亚丽.稀土对X70管线钢腐蚀行为的影响[J].特殊钢,2012,33(5):49-50. |
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| 作者姓名： | 杨吉春 左立杰 赵丙新 聂亚丽 |
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| 作者单位： | 内蒙古科技大学材料与冶金学院，包头014010 |
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| 基金项目： | 国家自然科学基金项目(51174114);内蒙古自然科学基金项目(2010Zd105);内蒙古高校科学研究项目(NJ2207098)资助 |
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| 摘 要： | 试验用X70管线钢(/%:0.12C、0.20Si、1.60Mn、0.005P、0.005S、0.10V、0.10Nb、0～0.15RE)用10kg真空感应炉冶炼。采用电化学和失重分析法研究了微量稀土对X70管线钢在0.1 mol/L Na2SO4水溶液中的腐蚀行为。试验结果表明,微量稀土可降低管线钢腐蚀电流icorr,改善腐蚀形貌。随着稀土加入量的增加,腐蚀电流减小,当钢中的RE含量由0增加至0.10%时腐蚀速率由7.43μg/(cm2.day)降至0.29μg/(cm2.day)。稀土的最适宜加入量是0.10%。
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| 关 键 词： | 稀土 腐蚀性能 X70管线钢 |
| 收稿时间： | 2012-03-26 |
Effect of RE Elements on Corrosion Behavior of Pipeline Steel X70 |
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| Yang Jichun
,
Zuo Lijie
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Zhao Bingxin
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Nie Yali.Effect of RE Elements on Corrosion Behavior of Pipeline Steel X70[J].Special Steel,2012,33(5):49-50. |
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| Authors: | Yang Jichun Zuo Lijie Zhao Bingxin Nie Yali |
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| Affiliation: | School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010 |
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| Abstract: | Test pipeline steel X70（/%:0.12C,0.20Si,1.60Mn,0.005P,0.005S,0.10V,0.10Nb,0～0.15RE） is melted by a 10 kg vacuum induction furnace.The corrosion behavior of pipeline steel X70 with micro-RE in 0.1 mol/L Na2SO4 water solution is studied by electrochemistry and weight loss method.Results show that the micro-RE addition obviously decreases corrosion current icorr of pipeline steel and improves morphology of corrosion surface.With increasing RE addition the corrosion current decreases and as RE content in steel increases from 0 to 0.10%the corrosion rate of steel decreases from 7.03μg/（cm2·day） to 0.29μg/（cm2·day）.The suitable RE addition is 0.10%. |
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| Keywords: | RE Elements Corrosion Behavior Pipeline Steel X70 |
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