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材料保护 >

2022 , Vol. 55 >Issue 6: 75 - 79

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0157

试验研究

42CrMo和Cr12MoV合金钢在NaCl溶液中的腐蚀电化学行为分析

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  • 华北电力大学(保定)环境科学与工程系
张胜寒(1962-)，博士生导师，教授，研究方向为金属腐蚀与防护、核电站水化学控制技术、水与废水处理，电话：0312-7525519，E - mail：zhang - shenghan@163.com

收稿日期: 2020-01-26

  修回日期: 2021-02-28

  录用日期: 2021-04-20

  网络出版日期: 2024-01-09

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Corrosion Electrochemical Behavior Analysis of 42CrMo and Cr12MoV Alloy Steels in NaCl Solution

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  • Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China

Received date: 2020-01-26

  Revised date: 2021-02-28

  Accepted date: 2021-04-20

  Online published: 2024-01-09

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摘要

针对合金钢在含NaCl环境下长期服役过程中遭受腐蚀的问题，选取42CrMo、Cr12MoV合金钢材料，通过采用动电位极化曲线、电化学阻抗谱分别研究了42CrMo和Cr12MoV合金钢在不同浓度NaCl环境下的电化学腐蚀行为。结果表明：2种合金钢的腐蚀速率随着NaCl浓度的增加呈现增大趋势。通过对42CrMo和Cr12MoV合金钢的电化学测试对比分析发现，在相同浓度NaCl溶液中，Cr12MoV的耐蚀性要优于42CrMo的。所得结果可为合金钢的应用提供参考。

关键词： 42CrMo; Cr12MoV; NaCl溶液; 腐蚀; 电化学评价

本文引用格式

孟旭铮, 于宁, 韦一可, 檀玉, 梁可心, 张胜寒 . 42CrMo和Cr12MoV合金钢在NaCl溶液中的腐蚀电化学行为分析[J]. 材料保护, 2022 , 55(6) : 75 -79 . DOI: 10.16577/j.issn.1001-1560.2022.0157

Abstract

Aiming at the corrosion problem of alloy steels in long - term service in environments containing NaCl, 42CrMo and Cr12MoV alloy steels were selected as research materials, and their electrochemical corrosion behaviors in environments with different NaCl concentrations was studied through potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS). Results showed that the corrosion rates of these two kinds of alloy steels increased with the rising of NaCl concentration. Through the comparative analysis of the electrochemical test results of 42CrMo and Cr12MoV alloy steels, it could be obtained that in NaCl solutions with the same concentration, the corrosion resistance of Cr12MoV was better than that of 42CrMo. The results of this study could provide reference for the application of alloy steels.

Key words： 42CrMo; Cr12MoV; NaCl solution; corrosion; electrochemical evaluation

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ISSN 1001-1560　CN 42-1215/TB
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