乙酸对2Cr12MoV钢在初凝水中腐蚀的影响

周柏青; 魏加强; 文一章; 万涛; 刘凯; 龚尚昆; 查方林

doi:10.3969/j.issn.1008-0198.2022.06.005

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乙酸对2Cr12MoV钢在初凝水中腐蚀的影响

研究与实验 | 更新时间：2025-06-11

- 乙酸对2Cr12MoV钢在初凝水中腐蚀的影响
- Effect of Acetic Acid on Corrosion Behavior of 2Cr12MoV Steel in Early Condensates
- 湖南电力 2022年42卷第6期页码：27-31
- 作者机构：
  
  1. 武汉大学动力与机械学院,湖北,武汉,430072
  2. 国网湖南省电力有限公司电力科学研究院,湖南,长沙,410208
  3. 湖南省湘电试验研究院有限公司,湖南,长沙,410004
  4. 高效清洁发电技术湖南省重点实验室,湖南,长沙,410007
  5. 湖南大学电气与信息工程学院,湖南,长沙,410082
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1008-0198.2022.06.005
  中图分类号： TG172.8
- 纸质出版日期：2022
- 稿件说明：
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周柏青, 魏加强, 文一章, 万涛, 刘凯, 龚尚昆, 查方林. 乙酸对2Cr12MoV钢在初凝水中腐蚀的影响[J]. 湖南电力, 2022, 42(6): 27-31.

ZHOU Baiqing, WEI Jiaqiang, WEN Yizhang, et al. Effect of Acetic Acid on Corrosion Behavior of 2Cr12MoV Steel in Early Condensates[J]. 2022, 42(6): 27-31.
周柏青, 魏加强, 文一章, 万涛, 刘凯, 龚尚昆, 查方林. 乙酸对2Cr12MoV钢在初凝水中腐蚀的影响[J]. 湖南电力, 2022, 42(6): 27-31. DOI： 10.3969/j.issn.1008-0198.2022.06.005.

ZHOU Baiqing, WEI Jiaqiang, WEN Yizhang, et al. Effect of Acetic Acid on Corrosion Behavior of 2Cr12MoV Steel in Early Condensates[J]. 2022, 42(6): 27-31. DOI： 10.3969/j.issn.1008-0198.2022.06.005.

摘要

针对汽轮机低压缸相变区腐蚀问题

通过失重法、SEM表面形貌分析法、拉曼光谱分析法和动电位极化测试等方法研究了乙酸(HAc)对2Cr12MoV钢在初凝水中腐蚀的影响

以揭示乙酸对汽轮机低压缸腐蚀的影响。实验结果表明

2Cr12MoV钢在HAc溶液中的腐蚀机理为缓冲作用机理

乙酸不直接参与阴极还原反应

而通过电离不断提供H

加速阴极反应。2Cr12MoV钢腐蚀速度随乙酸质量浓度增大而加快

2Cr12MoV钢在100 mg/L HAc初凝水溶液中的腐蚀速度在浸泡初期快速降低

120 h之后稳定在0.012 mm/a左右。

Abstract

Aiming at the corrosion problem in the phase change zone of low pressure cylinder of steam turbine

the effect of acetic acid (HAC) on the corrosion of 2Cr12MoV steel in primary setting water is studied by means of weight loss

SEM surface topography analysis

raman spectroscopy analysis and potentiodynamic polarization test

to reveal the effect of acetic acid on the corrosion of low pressure cylinder of steam turbine. The experimental results show that the corrosion mechanism of 2Cr12MoV steel in HAC solution is a buffering mechanism

acetic acid does not directly participate in the cathodic reduction reaction

but continuously provides H

to accelerate cathodic reaction by ionization.The corrosion rate of 2Cr12M

oV steel increases with the increase of acetic acid concentration

the corrosion rate of 2Cr12MoV steel in 100 mg/L HAC solution decreases rapidly at the beginning of soaking and it was stable at about 0.012 mm/a after 120 h.

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