NaHSO3 添加对445J2铁素体不锈钢在NaCl溶液中腐蚀行为影响研究

doi:10.11902/1005.4537.2025.289

中国腐蚀与防护学报

2026, Vol. 46

Issue (4): 1197-1206 CSTR: 32134.14.1005.4537.2025.289 DOI: 10.11902/1005.4537.2025.289

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NaHSO₃ 添加对445J2铁素体不锈钢在NaCl溶液中腐蚀行为影响研究

张晶晶¹, 张震²(

), 赵占勇², 白培康², 周杰³

^1.太原钢铁(集团)有限公司先进不锈钢全国重点实验室太原 030051
^2.中北大学材料科学与工程学院太原 030051
^3.中信金属宁波能源有限公司宁波 315800

Effect of NaHSO₃ Addition on Corrosion Behavior of 445J2 Ferritic Stainless Steel in NaCl Solution

ZHANG Jingjing¹, ZHANG Zhen²(

), ZHAO Zhanyong², BAI Peikang², ZHOU Jie³

^1.State Key Laboratory of Advanced Stainless Steel, Taiyuan Iron and Steel (Group) Co. Ltd., Taiyuan 030051, China
^2.School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
^3.CITIC Metal Ningbo Energy Co. Ltd., Ningbo 315800, China

引用本文:

张晶晶, 张震, 赵占勇, 白培康, 周杰. NaHSO₃ 添加对445J2铁素体不锈钢在NaCl溶液中腐蚀行为影响研究[J]. 中国腐蚀与防护学报, 2026, 46(4): 1197-1206.
Jingjing ZHANG, Zhen ZHANG, Zhanyong ZHAO, Peikang BAI, Jie ZHOU. Effect of NaHSO₃ Addition on Corrosion Behavior of 445J2 Ferritic Stainless Steel in NaCl Solution[J]. Journal of Chinese Society for Corrosion and protection, 2026, 46(4): 1197-1206.

全文: PDF(7284 KB) HTML

摘要:

采用动电位极化曲线、电化学阻抗谱(EIS)、电化学噪声(EN)和Motta-Schottky (M-S)测试等多尺度电化学分析方法，结合X射线光电子能谱(XPS)和腐蚀形貌观察，研究了NaHSO₃添加对445J2铁素体不锈钢在NaCl溶液中腐蚀行为的影响。结果表明，在0.62 mol/L NaCl溶液中加入0.05 mol/L NaHSO₃后，445J2铁素体不锈钢极化曲线测量的自腐蚀电位降低，自腐蚀电流密度增加，电荷转移电阻降低，耐蚀性急剧下降，同时EN时域信号中出现了很多低幅度长寿命电流暂态。加入NaHSO₃后，445J2铁素体不锈钢表面钝化膜点缺陷浓度升高，同时成分也发生了变化。XPS检测结果中出现了明显的Fe²⁺峰和O^2-/OH^-比例的降低。基于上述结果，从HSO $3 -$ 电离产生H⁺和SO $3 2 -$ ，导致溶液酸化以及SO $3 2 -$ 还原作用两方面讨论了NaHSO₃加入对445J2铁素体不锈钢钝化膜及其耐蚀性恶化的影响机制。

关键词 ：铁素体不锈钢, 腐蚀行为, 亚硫酸氢钠, 钝化膜

Abstract：

The effect of NaHSO₃ addition on the corrosion behavior of 445J2 ferritic stainless steel in NaCl solution was studied by means of potentiodynamic polarization curve measurement, electrochemical impedance spectroscopy (EIS), electrochemical noise (EN), and Motta-Schottky (M-S) testing, combined with X-ray photoelectron spectroscopy (XPS) and corrosion morphology observation. The results showed that after adding 0.05 mol/L NaHSO₃ to a 0.62 mol/L NaCl solution, the corrosion potential measured by polarization curve of 445J2 ferritic stainless steel decreased, the corrosion current density increased, the charge transfer resistance decreased, and the corrosion resistance sharply decreased. At the same time, many low amplitudes long-life current transient appeared in the EN time-domain signal. After adding NaHSO₃, the point defects concentration of the passive film on the surface of 445J2 ferritic stainless steel increased, and the composition also changed, showing a significant Fe²⁺ peak and a decrease in the O^2-/OH^- ratio in XPS detection results. Based on the above results, the influence mechanism of NaHSO₃ addition on the deterioration of passive film and corrosion resistance of 445J2 ferritic stainless steel was discussed from two aspects: the acidification of the solution and the reduction of SO $3 2 -$ by the generation of H⁺and SO $3 2 -$ by HSO $3 -$ electrolysis.

Key words： ferritic stainless steel corrosion behavior sodium bisulfite passive film

收稿日期: 2025-09-11 32134.14.1005.4537.2025.289

ZTFLH:

TG174

基金资助:山西省基础研究计划(20210302124042);中信金属-CBMM R&D铌技术合作项目(D204/M2273-2025)

通讯作者: 张震，E-mail：zzhang14s@alum.imr.ac.cn，研究方向为不锈钢局部腐蚀及评价技术

Corresponding author: ZHANG Zhen, E-mail: zzhang14s@alum.imr.ac.cn

作者简介: 张晶晶，女，1982年生，博士，正高级工程师

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https://www.jcscp.org/CN/10.11902/1005.4537.2025.289 或 https://www.jcscp.org/CN/Y2026/V46/I4/1197

图1 445J2铁素体不锈钢抛光后SEM-EDS及EBSD图

图2 445J2铁素体不锈钢在两种溶液中的动电位极化曲线

表1 445J2铁素体不锈钢在两种溶液中动电位极化曲线的拟合结果

图3 445J2铁素体不锈钢在两种溶液中动电位极化测试后表面SEM形貌

图4 445J2铁素体不锈钢在两种溶液中的EIS谱

图5 用于拟合EIS数据的等效电路图

表2 445J2铁素体不锈钢在两种溶液中EIS数据拟合结果

图6 445J2铁素体不锈钢在两种溶液中浸泡24 h对应的EN信号及电流特征暂态

图7 445J2铁素体不锈钢在两种溶液中谱噪声电阻的累积分布图

图8 445J2铁素体不锈钢在两种溶液中浸泡24 h后M-S测试及拟合结果

图9 445J2铁素体不锈钢在两种溶液中浸泡24 h后XPS精细谱Cr 2p和Fe 2p分峰图谱

图10 445J2铁素体不锈钢在两种溶液中浸泡24 h后O 1s的XPS图谱以及O2-/OH-比例

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