Effect of RE Elements on Corrosion Behavior of Pipeline Steel X70

杨吉春; 左立杰; 赵丙新; 聂亚丽

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Effect of RE Elements on Corrosion Behavior of Pipeline Steel X70

更新时间：2026-01-21

- Effect of RE Elements on Corrosion Behavior of Pipeline Steel X70
- Special Steel Vol. 33, Issue 5, Pages: 49-50(2012)
- 作者机构：
  
  内蒙古科技大学材料与冶金学院,包头,014010
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：26 March 2012，
  
  Online First：10 October 2022，
  
  Published：10 October 2012
- 稿件说明：
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杨吉春, 左立杰, 赵丙新, et al. Effect of RE Elements on Corrosion Behavior of Pipeline Steel X70[J]. Special Steel, 2012, 33(5): 49-50.
DOI：

杨吉春, 左立杰, 赵丙新, et al. Effect of RE Elements on Corrosion Behavior of Pipeline Steel X70[J]. Special Steel, 2012, 33(5): 49-50. DOI：

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 Na

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i

corr

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/(cm

.day)降至0.29μg/(cm

.day)。稀土的最适宜加入量是0.10%。

Abstract

Test pipeline steel X70 (/%: 0. 12C

0. 20Si

1.60Mn

0. 005P

0. 005S

0. 10V

0. lONb

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 Na

water solution is studied by electrochemistry and weight loss method. Results show that the micro-RE addition obviously decreases corrosion current i

corr

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/ (cm

. day) to 0. 29μg / (cm

・ day). The suitable RE addition is 0. 10%.

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