Cr<sup>2+</sup>/Cr<sup>3+</sup>对FLiNaK熔盐体系电偶腐蚀抑制行为及机理研究

doi:10.11902/1005.4537.2020.090

中国腐蚀与防护学报

2021, Vol. 41

Issue (3): 341-345 DOI: 10.11902/1005.4537.2020.090

研究报告

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Cr²⁺/Cr³⁺对FLiNaK熔盐体系电偶腐蚀抑制行为及机理研究

左勇¹^,²^,³(

), 秦越强¹^,³, 申淼¹^,², 杨新梅¹^,²^,³

^1.中国科学院上海应用物理研究所上海 201800
^2.中国科学院洁净能源创新研究院大连 116023
^3.中国科学院大学北京 100049

Effect of Cr²⁺/Cr³⁺ on Galvanic Corrosion Inhibition of Dissimilar Metallic Materials in 46.5%LiF-11.5%NaF-42.0%KF Molten Salts System

ZUO Yong¹^,²^,³(

), QIN Yueqiang¹^,³, SHEN Miao¹^,², YANG Xinmei¹^,²^,³

^1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
^2.Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian 116023, China
^3.University of Chinese Academy of Sciences, Beijing 100049, China

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摘要:

利用腐蚀电化学以及浸泡腐蚀实验结果表明，通过向FLiNaK熔盐体系引入Cr²⁺/Cr³⁺氧化还原缓冲离子对，可以使不同金属材料在该熔盐体系的电位差缩小乃至消除，并抑制不同金属材料之间的电偶腐蚀。

关键词 ：熔盐, 电偶腐蚀, 氧化还原缓冲离子对, 腐蚀抑制

Abstract：

Galvanic corrosion should be considered when dissimilar metallic materials in contact with each other in a molten salt system of high ionic conductivity. Corrosion electrochemistry and immersion corrosion tests indicated that the difference of the corrosion potentials of different metal materials can be decreased or diminished by coupling Cr²⁺/Cr³⁺ into the 46.5%LiF-11.5%NaF-42.0%KF (in mole fraction) molten salt. Thus, the galvanic corrosion behavior between different metal materials can be effectively inhibited.

Key words： molten salt galvanic corrosion redox buffering ion pair corrosion mitigation

收稿日期: 2020-05-25

ZTFLH:

O646.6

基金资助:中国科学院战略性先导科技专项(XDA21000000)

通讯作者: 左勇 E-mail: zuoyong@sinap.ac.cn

Corresponding author: ZUO Yong E-mail: zuoyong@sinap.ac.cn

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引用本文:

左勇, 秦越强, 申淼, 杨新梅. Cr²⁺/Cr³⁺对FLiNaK熔盐体系电偶腐蚀抑制行为及机理研究[J]. 中国腐蚀与防护学报, 2021, 41(3): 341-345.
Yong ZUO, Yueqiang QIN, Miao SHEN, Xinmei YANG. Effect of Cr²⁺/Cr³⁺ on Galvanic Corrosion Inhibition of Dissimilar Metallic Materials in 46.5%LiF-11.5%NaF-42.0%KF Molten Salts System. Journal of Chinese Society for Corrosion and protection, 2021, 41(3): 341-345.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2020.090 或 https://www.jcscp.org/CN/Y2021/V41/I3/341

图1 3种熔盐体系不同金属材料的极化曲线

图2 不同CrF2添加量下金属材料在FLiNaK+1000 μg/g CrF3熔盐中的腐蚀电位

图3 不同熔盐体系316L不锈钢与GH3535合金之间的电偶腐蚀电流-时间曲线

图4 316L不锈钢 (与等面积GH3535偶联) 在3种熔盐中浸泡24 h后截面微观形貌

1	Williams D F. Assessment of candidate molten salt coolants for the NGNP/NHI heat-transfer loop [R]. Tennessee: Oak Ridge National Laboratory, 2006
2	Gehin J C, Powers J J. Liquid fuel molten salt reactors for thorium utilization [J]. Nucl. Technol., 2016, 194: 152
3	Farmer J, El-dasher B, De Caro M S, et al. Corrosion of ferritic steels in high temperature molten salt coolants for nuclear applications [A]. MRS Fall Meeting [C]. Bosten, 2008
4	Dai Z M. 17-Thorium molten salt reactor nuclear energy system (TMSR) [A]. Dolan T J ed. Molten Salt Reactors and Thorium Energy [M]. Duxford, UK: Woodhead Publishing, 2017: 531-540
5	Vignarooban K, Xu X H, Arvay A, et al. Heat transfer fluids for concentrating solar power systems-A review [J]. Appl. Energy, 2015, 146: 383
6	Mohan G, Venkataraman M, Gomez-Vidal J, et al. Thermo-economic analysis of high-temperature sensible thermal storage with different ternary eutectic alkali and alkaline earth metal chlorides [J]. Solar Energy, 2018, 176: 350
7	Myers P D, Goswami D Y. Thermal energy storage using chloride salts and their eutectics [J]. Appl. Thermal Eng., 2016, 109: 889
8	Romatoski R R, Hu L W. Fluoride salt coolant properties for nuclear reactor applications: A review [J]. Ann. Nucl. Energy, 2017, 109: 635
9	Jiang L, Ye X X, Wang D J, et al. Synchrotron radiation-based materials characterization techniques shed light on molten salt reactor alloys [J]. Nucl. Sci. Techniq., 2020, 31: 6
10	Allen T R, Sridharan K, Tan L, et al. Materials challenges for Generation IV nuclear energy systems [J]. Nucl. Technol., 2008, 162: 342
11	Zuo Y, Cao M P, Shen M, et al. Effect of Mg on corrosion of 316H stainless steel in molten salts MgCl₂-NaCl-KCl [J]. J. Chin. Soc. Corros. Prot., 2020, 41: 80
11	左勇, 曹明鹏, 申淼等. MgCl₂-NaCl-KCl熔盐体系中金属Mg对316H不锈钢的缓蚀性能研究 [J]. 中国腐蚀与防护学报, 2020, 41: 80
12	Ding X B, Sun H, Yu G J, et al. Corrosion behavior of Hastelloy N and 316L stainless steel in molten LiF-NaF-KF [J]. J. Chin. Soc. Corros. Prot., 2015, 35: 543
12	丁祥彬, 孙华, 俞国军等. Hastelloy N合金和316L不锈钢在LiF-NaF-KF熔盐中的腐蚀行为研究 [J]. 中国腐蚀与防护学报, 2015, 35: 543
13	Cheng W J, Sellers R S, Anderson M H, et al. Zirconium effect on the corrosion behavior of 316l stainless steel alloy and hastelloy-N superalloy in molten fluoride salt [J]. Nucl. Technol., 2013, 183: 248
14	Fernández A G, Cabeza L F. Corrosion monitoring and mitigation techniques on advanced thermal energy storage materials for CSP plants [J]. Solar Energy Mater. Solar Cells, 2019, 192: 179
15	Zhang J S, Forsberg C W, Simpson M F, et al. Redox potential control in molten salt systems for corrosion mitigation [J]. Corros. Sci., 2018, 144: 44
16	Wang Y L, Liu H J, Zeng C L. Galvanic corrosion of pure metals in molten fluorides [J]. J. Fluor. Chem., 2014, 165: 1
17	Zhang B H, Cong W B, Yang P. Electrochemical Corrosion and Protection for Metals [M]. Beijing: Chemical Industry Press, 2005
17	张宝宏, 丛文博, 杨萍. 金属电化学腐蚀与防护 [M]. 北京: 化学工业出版社, 2005
18	Olander D. Redox condition in molten fluoride salts: Definition and control [J]. J. Nucl. Mater., 2002, 300: 270
19	Del Cul G D, Williams D F, Toth L M. Redox potential of novel electrochemical buffers useful for corrosion prevention in molten fluorides [A]. Proceedings of the 13th International Symposium [C]. Pennington, 2002
20	Gibilaro M, Massot L, Chamelot P. A way to limit the corrosion in the Molten Salt Reactor concept: the salt redox potential control [J]. Electrochim. Acta, 2015, 160: 209
21	Zuo Y, Huang H, Li X Y, et al. Experimental installation for molten salt electrochemistry [P]. Chinese patent: 102553664, 2012
21	左勇, 黄鹤, 李晓云等. 熔盐电化学实验装置 [P]. 中国专利: 102553664, 2012)
22	Zuo Y, Wang Y, Tang R, et al. A kind of FLiNaK molten salts and its preparation method, reactor and preparation apparatus [P]. Chinese Patent: 108376570, 2018
22	左勇, 汪洋, 汤睿等. 一种FLiNaK熔盐及其制备方法、反应器和制备装置 [P]. 中国专利: 108376570, 2018)
23	Qin Y Q, Zuo Y, Shen M. Corrosion inhibition of 316l stainless steel in FLiNaK-CrF₃/CrF₂ redox buffering molten salt system [J]. J. Chin. Soc. Corros. Prot., 2020, 40: 182
23	秦越强, 左勇, 申淼. FLiNaK-CrF₃/CrF₂氧化还原缓冲熔盐体系对316L不锈钢耐蚀性能的影响 [J]. 中国腐蚀与防护学报, 2020, 40: 182
24	Cao C N. Principles of Electrochemistry of Corrosion [M]. 3rd Ed. Beijing: Chemical Industry Press, 2008
24	曹楚南. 腐蚀电化学原理 [M]. 第3版. 北京: 化学工业出版社, 2008

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