ClO2-对S2205不锈钢在Cl-介质中点蚀初期行为的影响

doi:10.11902/1005.4537.2020.104

中国腐蚀与防护学报

2021, Vol. 41

Issue (4): 523-528 DOI: 10.11902/1005.4537.2020.104

研究报告

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ClO₂^-对S2205不锈钢在Cl^-介质中点蚀初期行为的影响

杨众魁, 史艳华(

), 乔忠立, 梁平, 王玲

辽宁石油化工大学机械工程学院抚顺 113001

Effect of ClO₂^- on Pitting Initiation of S2205 Stainless Steel in Cl^- Containing Medium

YANG Zhongkui, SHI Yanhua(

), QIAO Zhongli, LIANG Ping, WANG Ling

School of Mechanical Engineering, Liaoning Petrochemical University, Fushun 113001, China

全文: PDF(2146 KB) HTML

摘要:

采用金相显微镜观察了脱硝工况下腐蚀失效管件的夹杂物和蚀坑形貌，利用慢速动电位扫描的方法研究了不同浓度ClO₂^-对S2205不锈钢在含Cl^-介质中的亚稳态点蚀的影响。结果表明，一方面ClO₂^-与O₂竞争吸附阻碍钝化膜的生成与修复，强氧化性致使钝化膜部分溶解，稳定性降低；另一方面ClO₂^-与Cl^-竞争吸附，浓度越大置换率越高，一定程度上又保护了钝化膜。ClO₂^-的引入，ClO₂^-与Cl^-竞争吸附抑制了亚稳态点蚀形核，此时形核以金属表面的夹杂物以及具有一定临界深度的表面沟槽产生活性点诱发为主。由于钝化膜稳定性的降低，浓度增大亚稳态点蚀形核数目稍有上升，亚稳态点蚀生长速率与浓度变化关系不大。添加ClO₂^-后，Cl^-诱发亚稳态点蚀形核受到抑制，E_m迅速增大后随浓度变化不明显，钝化膜稳定性降低，E_b迅速减小后随浓度增加缓慢减小，亚稳态更容易转变为稳态点蚀。电位升高金属表面夹杂物溶解，抑制了亚稳态点蚀形核，同时增大了Cl^-迁移速率，促进了亚稳态点蚀的生长。

关键词 ： S2205不锈钢, ClO₂^-, 亚稳态点蚀, 形核, 生长

Abstract：

The effect of ClO₂^- amount on the metastable pitting of S2205 stainless steel in Cl^- containing medium was studied by means of slow potentiodynamic scan. The results show that the competitive adsorption of ClO₂^- and O₂ hinders the formation and repairation of the passivation film, while the strong oxidation causes the partial dissolution of the passivation film, thereby its stability is reduced. Meanwhile, ClO₂^- competes with Cl^- for adsorption, the greater the concentration, the higher the replacement rate, as a result, such competition may provide protectiveness for the passivation film to a certain extent. The competitive adsorption of ClO₂^- and Cl^- can suppress the metastable pitting nucleation, at this time, the nucleation could mainly occur on inclusions and active sites on the metal surface, of which the later might be generated on the surface grooves with a certain critical depth. Due to the decrease in the stability of the passivation film, as the concentration of ClO₂^- increases, the number of metastable pitting nucleation increases slightly, and the growth rate of metastable pitting has little relationship with the concentration of ClO₂^-. After the addition of ClO₂^-, Cl^- induced metastable pitting nucleation was inhibited, E_m increases rapidly, then its change with the concentration is not obvious, and the stability of the passivation film decreases, caused E_b decreases rapidly, it slowly decreases with the increasing concentration of ClO₂^-, then the metastable state of pitting is more likely to be transformed into the stable stage. The increase in potential could facilitate the dissolution of inclusions on the metal surface, inhibiting the metastable pitting nucleation, while increasing the Cl^- migration rate and thus promoting the growth of metastable pitting.

Key words： S2205 stainless steel ClO₂^- metastable pitting nucleation growth

收稿日期: 2020-06-19

ZTFLH:

TG172.5

基金资助:辽宁省教育厅科研项目(L2013154)

通讯作者: 史艳华 E-mail: shiyanhua_2010@163.com

Corresponding author: SHI Yanhua E-mail: shiyanhua_2010@163.com

作者简介: 杨众魁，男，1995年生，硕士生

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引用本文:

杨众魁, 史艳华, 乔忠立, 梁平, 王玲. ClO₂^-对S2205不锈钢在Cl^-介质中点蚀初期行为的影响[J]. 中国腐蚀与防护学报, 2021, 41(4): 523-528.
Zhongkui YANG, Yanhua SHI, Zhongli QIAO, Ping LIANG, Ling WANG. Effect of ClO₂^- on Pitting Initiation of S2205 Stainless Steel in Cl^- Containing Medium. Journal of Chinese Society for Corrosion and protection, 2021, 41(4): 523-528.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2020.104 或 https://www.jcscp.org/CN/Y2021/V41/I4/523

图1 失效管件夹杂物和腐蚀坑的显微形貌

图2 S2205不锈钢在含不同浓度ClO2-的NaCl溶液中的慢速动电位极化曲线

图3 亚稳态点蚀形核数目和生长速率随ClO2-浓度的变化曲线

图4 不同ClO2-浓度对Em和Eb值的关系曲线

图5 不同ClO2-浓度下在不同电位区间内的亚稳态点蚀形核数目

图6 在不同ClO2-浓度下不同电位区间内的亚稳态点蚀生长速率

1	Wang W. Composition and structure of duplex stainless steel passivation film [J]. Plant Mainten. Eng., 2018, (22): 161
1	王巍. 双相不锈钢钝化膜组成和结构 [J]. 设备管理与维修, 2018, (22): 161
2	Wang Y Q, Li N, Lin S H. Overview of stainless steel pitting corrosion research [J]. Corros. Sci. Prot. Technol., 2015, 27: 387
2	王永强, 李娜, 林苏华. 不锈钢点蚀研究概述 [J]. 腐蚀科学与防护技术, 2015, 27: 387
3	Fan Q Q, Hua L. Influencing factors of corrosion behavior of 2205 duplex stainless steel [J]. Corros. Sci. Prot. Technol., 2014, 26: 178
3	范强强, 华丽. 2205双相不锈钢腐蚀行为的影响因素 [J]. 腐蚀科学与防护技术, 2014, 26: 178
4	Xu J L, Deng B, Sun T, et al. Evaluation of the susceptibility to intergranular attack of 2205 duplex stainless steel by DL-EPR method [J]. Acta Metall. Sin., 2010, 46: 380
4	徐菊良, 邓博, 孙涛等. DL-EPR法评价2205双相不锈钢晶间腐蚀敏感性 [J]. 金属学报, 2010, 46: 380
5	Feng M, Gong M, Zhang Y, et al. Effect of temperature on cathodic reaction of 2205 duplex stainless steel corrosion in brine [J]. Corros. Prot., 2011, 32: 691
5	冯敏, 龚敏, 张豫等. 温度对2205双相不锈钢在卤水中腐蚀阴极反应的影响 [J]. 腐蚀与防护, 2011, 32: 691
6	Xing S S, Qi H Y, Zheng C B. Effect of solution treatment on microstructure and passivation film properties of 2205 duplex stainless steel [J]. Heat Treat. Met., 2020, 45(3): 146
6	邢珊珊, 戚浩宇, 郑传波. 固溶处理对2205双相不锈钢组织及钝化膜特性的影响 [J]. 金属热处理, 2020, 45(3): 146
7	Huang G Q. Corrosion of stainless steels in tidal zone-exposure test for 16 years [J]. J. Chin. Soc. Corros. Prot., 2002, 22: 330
7	黄桂桥. 不锈钢海水潮汐区16年腐蚀行为 [J]. 中国腐蚀与防护学报, 2002, 22: 330
8	Deng Y S, Huang G Q. Corrosion behavior of cast stainless steels in seawater [J]. Equip. Environ. Eng., 2005, 2(2): 76
8	邓永生, 黄桂桥. 海水环境中铸造不锈钢的腐蚀行为 [J]. 装备环境工程, 2005, 2(2): 76
9	Wang B, Du N, Zhang H, et al. Accelerating effect of pitting corrosion products on metastable pitting initiation and the stable pitting growth of 304 stainless steel [J]. J. Chin. Soc. Corros. Prot., 2019, 39: 338
9	王标, 杜楠, 张浩等. 304不锈钢点蚀产物对亚稳态点蚀萌生和稳态蚀孔生长的加速作用 [J]. 中国腐蚀与防护学报, 2019, 39: 338
10	Shi L, Zheng Z J, Gao Y. Mechanism and research methods of pitting corrosion of stainless steels [J]. Mater. Rev., 2015, 29(23): 79
10	石林, 郑志军, 高岩. 不锈钢的点蚀机理及研究方法 [J]. 材料导报, 2015, 29(23): 79
11	Zhang S Q, Du N, Wang M F, et al. Effect of cathode area on stable pitting growth rate of 304 stainless steel in 3.5%NaCl solution [J]. J. Chin. Soc. Corros. Prot., 2018, 38: 551
11	张思齐, 杜楠, 王梅丰等. 阴极面积对3.5%NaCl溶液中304不锈钢稳态点蚀生长速率的影响 [J]. 中国腐蚀与防护学报, 2018, 38: 551
12	Garfias-Mesias L F, Sykes J M. Metastable pitting in 25 Cr duplex stainless steel [J]. Corros. Sci., 1999, 41: 959
13	Tobler W J, Virtanen S. Effect of Mo species on metastable pitting of Fe18Cr alloys—A current transient analysis [J]. Corros. Sci., 2006, 48: 1585
14	Zuo Y, Fu S. Effect of surface roughness on metastable pitting of amorphous Ni alloy [J]. J. Univ. Sci. Technol. Beijing, 1996, 18(S2): 11
14	左禹, 符适. 表面粗糙度对非晶态合金亚稳态小孔形核和生长的影响 [J]. 北京科技大学学报, 1996, 18(S2): 11
15	Zuo Y. Current fluctuations during pit initiation on NiCrFeSiB amorphous alloys [J]. J. Chin. Soc. Corros. Prot., 1995, 15: 28
15	左禹. 非晶态NiCrFeSiB合金蚀孔萌生期间的电流波动 [J]. 中国腐蚀与防护学报, 1995, 15: 28
16	Tang Y M, Lin B, Zhao X H, et al. Effect of surface roughness on early stage of pitting corrosion of 316L SS [J]. Corros. Sci. Prot. Technol., 2014, 26: 505
16	唐聿明, 林冰, 赵旭辉等. 粗糙度在316L不锈钢小孔初期生长过程中的作用 [J]. 腐蚀科学与防护技术, 2014, 26: 505
17	Shi H Y, Zuo Y. Effect of tungstate ions on nucleation and growth of metastable- and stable-pitting of 304 stainless steel in NaCl solution [J]. Corros. Sci. Prot. Technol., 2018, 30: 167
17	石慧英, 左禹. 钨酸根离子对304不锈钢亚稳态与稳态孔蚀形核与生长的影响 [J]. 腐蚀科学与防护技术, 2018, 30: 167
18	Shi H Y, Tang Y M, Zuo Y. Effects of PO₄^3- on pitting nucleation of 304 stainless steel in chloride solutions [J]. J. Chin. Soc. Corros. Prot., 2013, 33: 36
18	石慧英, 唐聿明, 左禹. PO₄^3-对304不锈钢在氯离子水溶液中小孔腐蚀形核过程的影响 [J]. 中国腐蚀与防护学报, 2013, 33: 36
19	Lensch O, Enders B, Knecht J, et al. Examination of the metastable and stable pitting corrosion of aluminum modified with carbon by ion beam techniques [J]. Nucl. Inst. Methods Phys. Res., 2001, 175-177B: 683
20	Kairy S K, Rometsch P A, Davies C H J, et al. The influence of copper additions and aging on the microstructure and metastable pitting of Al-Mg-Si alloys [J]. Corrosion, 2015, 71: 1304
21	Kim Y, Buchheit R G. A characterization of the inhibiting effect of Cu on metastable pitting in dilute Al-Cu solid solution alloys [J]. Electrochim. Acta, 2007, 52: 2437
22	Wang H, Xie J, Yan K P, et al. The nucleation and growth of metastable pitting on pure iron [J]. Corros. Sci., 2009, 51: 181
23	Zhang B, Ma X L. TEM study on the pitting initiation [J]. Mater. China, 2018, 37: 866
23	张波, 马秀良. 点蚀形核机制的透射电子显微学研究 [J]. 中国材料进展, 2018, 37: 866
24	Li D G, Chen D R, Feng Y R, et al. Investigation on the composition and semi-conductive property of the passive film on 22Cr duplex stainless steel [J]. Acta Chim. Sin., 2008, 66: 2329
24	李党国, 陈大融, 冯耀荣等. 22Cr双相不锈钢钝化膜组成及其半导体性能研究 [J]. 化学学报, 2008, 66: 2329
25	Chen H L, Tian Y M, Guo H, et al. Effect of sodium hypochlorite on corrosion behavior of ductile cast iron pipe in reclaimed water [J]. Corros. Sci. Prot. Technol., 2017, 29: 41
25	陈灏琳, 田一梅, 郭浩等. NaClO对再生水球墨铸铁管道腐蚀行为的影响 [J]. 腐蚀科学与防护技术, 2017, 29: 41
26	Zhang C Y, Chen X Q, Chen D B, et al. Research of pitting susceptibility in low carbon steels and mechanism of pitting initiation [J]. J. Chin. Soc. Corros. Prot., 2001, 21: 265
26	张春亚, 陈学群, 陈德斌等. 不同低碳钢的点蚀诱发敏感性及诱发机理研究 [J]. 中国腐蚀与防护学报, 2001, 21: 265

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