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含卤体系不锈钢局部腐蚀发展研究的闭塞电池模型构建

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  • 南京工业大学环境科学与工程学院, 江苏 南京 211816
 连洲洋(1985-),副教授,博士,研究方向为金属材料的腐蚀与防护,电话:13585196987,E-mail:lianzy@njtech.edu.cn

收稿日期: 2022-07-20

  修回日期: 2022-08-05

  录用日期: 2022-09-07

  网络出版日期: 2023-07-25

基金资助

国家自然科学基金(21676144)资助;

Construction of Occluded Cell Model for the Study of Localized Corrosion Development in Stainless Steel in Halogen-Containing Systems

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  • School of Environmental Science and Engineering, Nanjing Technology University, Nanjing 211816, China

Received date: 2022-07-20

  Revised date: 2022-08-05

  Accepted date: 2022-09-07

  Online published: 2023-07-25

摘要

针对目前通过构建闭塞电池模型仅能对单一含卤体系不锈钢局部腐蚀展开研究的现状,构建氟氯离子共存体系中304不锈钢局部腐蚀发展的闭塞电池模型,通过单因素和正交实验分别确定模型的工作条件及主要影响参数,结合闭塞区pH值、离子迁移量、腐蚀电流和腐蚀速率对模型可用性进行验证。结果表明:构建的烟道气氨法脱硫浆液中304不锈钢局部腐蚀发展闭塞电池模型较好的工作环境为外加电压0.8 V、溶液温度50℃,模型本身的最佳影响参数组合为内溶液体积与阳极暴露面积比59、阴阳极暴露面积比10、模拟锈层厚度3 mm,该模型在含不同浓度氟氯离子的介质中均具有较好的可用性。

本文引用格式

任万凯, 连洲洋, 左 杰, 罗正维, 魏无际, 张雪英 . 含卤体系不锈钢局部腐蚀发展研究的闭塞电池模型构建[J]. 材料保护, 2023 , 56(1) : 1 -5 . DOI: 10.16577/j.issn.1001-1560.2023.0001

Abstract

In view of the current situation that constructing an occluded cell model can only enable the study of localized corrosion of stainless steel in single halogen-containing system, a new occluded cell model for studying the development of localized corrosion of 304 stainless steel in a fluorine-chloride ion coexistence system was constructed, and the working conditions and main influencing parameters of such model were determined through single factor tests and orthogonal tests respectively. Meanwhile, the usability of the model was verified taking into account the pH value of the occluded zone, ion migration, corrosion current and corrosion rate. Results showed that for the constructed occluded cell model for the study of localized corrosion development of 304 stainless steel in the flue gas ammonia desulfurization slurry, an applied voltage of 0.8 V and a solution temperature of 50 ℃ were good working conditions. The optimal combination of influencing parameters was as follows: a ratio of internal solution volume to anode exposure area of 59, a ratio of cathode exposure area to anode exposure area of 10, and a simulated rust thickness of 3 mm. Moreover, the model presented good usability in media containing different concentrations of fluorine ions and chloride ions.

参考文献

[ 1] 唐兴东. 冶炼烟气制酸系统除氟工艺的研究与应用[D].兰州:兰州大学, 2015.TANG X D. Research and Application of Smelter Acid Fluoride Technology Systems[D]. Lanzhou: Lanzhou University, 2015.

[ 2] 欧阳明辉,刘焕安,叶际宣. 燃煤电厂烟气脱硫系统湿烟囱的腐蚀及防护[J]. 电力科技与环保, 2014, 30(5):12-16.OUYANG M H,LIU H A,YE J X. Corrosion and protection of wet stack in FGD system of coal-fired power plant[J].Electric Power Technology and Environmental Protection,2014, 30(5): 12-16.

[ 3] BONK A, Rückle D, KAESCHE S, et al. Impact of Solar Salt aging on corrosion of martensitic and austenitic steel for concentrating solar power plants[J]. Solar Energy Materials and Solar Cells, 2019, 203: 110 162.

[ 4] 史艳华,于 洋,梁 平,等. 316L 不锈钢在氯离子环境中的腐蚀行为[J].材料保护,2015,48(8):29-32.SHI Y H, YU Y, LIANG P, et al. Corrosion Behaviors of 316L Austenitic Stainless Steel in Solutions Containing Chloride Ions[J]. Materials Protection, 2015, 48(8):29-32.

[ 5] WANG Y, WANG W, LIU Y, et al. Study of localized corrosion of 304 stainless steel under chloride solution droplets using the wire beam electrode[J]. Corrosion Science,2011,53(9): 2 963-2 968.

[ 6] ABDO H S, SEIKH A H, MOHAMMED J A, et al. Influence of chloride ions on electrochemical corrosion behavior of dual-phase steel over conventional rebar in pore solution[J]. Applied Sciences, 2020, 10(13): 4 568.

[ 7] HE S. Influence of High Temperature, Stress and Chloride Ions on Protection Mechanism of Passive Film on 304 Stainless Steel[J]. International Journal of Electrochemical Science, 2018,13: 4 876-4 890.

[ 8] 李伟光,赵万祥,孔全兴,等. 不锈钢闭塞腐蚀电池与腐蚀控制[J]. 全面腐蚀控制, 2014, 28(8): 22-26.LI W G, ZHAO W X, KONG Q X, et al. Occluded Corrosion Cell of Stainless Steel and Corrosion Control[J]. Total Corrosion Control, 2014, 28(8): 22-26.

[ 9] GB/T 16545-2015,金属和合金的腐蚀:腐蚀试样上腐蚀产物的清除[S].GB/T 16545-2015, Corrosion of metals and alloys: Removal of corrosion products from corrosion specimens[S].

[10] 付志浩,徐佳欢,汪 丹,等. 烟道气氨法脱硫液对Q235碳钢腐蚀研究[J]. 腐蚀科学与防护技术,2019,31(5):521-525.FU Z H, XU J H, WANG D, et al. Corrosion of Q235 Carbon Steel in Ammonia-based Flue Gas Desulfurization Slurry[J]. Corrosion Science and Protection Technology, 2019,31(5):521-525.

[11] LIAN Z Y, LUO Z W, YUAN L R, et al. Corrosion inhibition of organic amine on Q235 steel in ammonium sulfate slurry of ammonia flue gas desulfurization system[J]. Anticorrosion Methods and Materials, 2017, 64(4): 432-442.

[12] 杭 蕾,吕 程,陈慧慧,等. 自动电位滴定法测定烟气氨法脱硫模拟浆液中氯离子的研究[J]. 工业安全与环保,2015, 41(3): 31-34.HANG L,LV C,CHEN H H,et al. The Study on Detection of Chloride Ion in Flue Gas Ammonium Sulfate Slurry by Automatic Potentiometric Titration method[J].Industrial Safety and Environmental Protection, 2015, 41(3): 31-34.

[13] LUO Z W, GUO M L, CHEN H H, et al. Determining fluoride ions in ammonium desulfurization slurry using an ion selective electrode method [J]. IOP Conference Series:Earth and Environmental Science,2018,121(2):22-33.

[14] 陈卓元,杜元龙.模拟电池阴阳极面积比对沉积物下API-P105钢腐蚀规律的影响[J].腐蚀与防护,1999(10):444-447.CHEN Z Y, DU Y L. Effect of Ac/Aa of theunderdeposit corrosion law of API-P105 steel[J]. Corrosion & Protection, 1999(10):444-447.

[15] 杨铁军,李国明,陈 珊,等.低合金钢点蚀扩展过程中的自催化作用[J].腐蚀与防护, 2010,31(7):540-541.YANG T J, LI G M,CHEN S. Self-catalytic in Pitting Propagation Process of Low Alloy Steels[J]. Corrosion & Protection, 2010, 31(7):540-541.

[16] 白占旗, 张建君. 制备CFC 替代品氟化催化剂的XPS 研究[J]. 宁夏大学学报(自然科学版), 2001(2): 213-214.BAI Z Q, ZHANG J J. The XPS student of fluoribation catalyst for preparation of CFC alternatives [J]. Journal of Ningxia University(Natural Science Edition), 2001(2):213-214.

[17] KUMAGAI M, YASHIRO H, ASAISHI R, et al. High Nitrogen Stainless Steel As Bipolar Plates For Proton Exchange Membrane Fuel Cells[J]. Journal of Power Sources, 2008,185(2): 815-821.

[18] MOLCHAN I S, THOMPSON G E, WALTON J, et al. Passivation behaviour of 304 stainless steel in an ionic liquid with a fluorinated anion [J]. Applied Surface Science,2015,357:37-44.

[19] 郭洪涛,郭瑞光,郭小梅,等. 氟对不锈钢钝化效果的影响[J]. 表面技术, 2012,41(3): 77-79.GUO H T, GUO R G, GUO X M, et al. The effect of fluoride on the passivation of stainless steel[J]. Surface Technology, 2012, 41(3): 77-79.
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