GH3535合金在FLiNaK熔盐中的腐蚀行为

doi:10.11900/0412.1961.2015.00132

金属学报

2015, Vol. 51

Issue (9): 1059-1066 DOI: 10.11900/0412.1961.2015.00132

本期目录 | 过刊浏览

GH3535合金在FLiNaK熔盐中的腐蚀行为

刘涛^1,²,董加胜²(

),谢光²,王义胜³,李辉²,李志军⁴,周兴泰⁴,楼琅洪²

2 中国科学院金属研究所, 沈阳 110016
3 中国南方航空工业(集团)有限公司机动分公司, 株洲 412002
4 中国科学院上海应用物理研究所, 上海 201800

CORROSION BEHAVIOR OF GH3535 SUPERALLOY IN FLiNaK MOLTEN SALT

Tao LIU^1,²,Jiasheng DONG²(

),Guang XIE²,Yisheng WANG³,Hui LI²,Zhijun LI⁴,Xingtai ZHOU⁴,Langhong LOU²

1 School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024
2 Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
3 Power Branch, AVIC China National South Aviation Industry Co., Ltd., Zhuzhou 412002
4 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800

引用本文:

刘涛,董加胜,谢光,王义胜,李辉,李志军,周兴泰,楼琅洪. GH3535合金在FLiNaK熔盐中的腐蚀行为[J]. 金属学报, 2015, 51(9): 1059-1066.
Tao LIU, Jiasheng DONG, Guang XIE, Yisheng WANG, Hui LI, Zhijun LI, Xingtai ZHOU, Langhong LOU. CORROSION BEHAVIOR OF GH3535 SUPERALLOY IN FLiNaK MOLTEN SALT[J]. Acta Metall Sin, 2015, 51(9): 1059-1066.

全文: PDF(7887 KB) HTML

摘要:

将带Al₂O₃涂层和无涂层的GH3535合金在FLiNaK熔盐中进行全浸腐蚀实验, 利用SEM, EDS, XRD等手段研究了有无Al₂O₃涂层的GH3535合金在熔盐中的腐蚀行为. 结果表明, 有无涂层的GH3535合金在700 ℃的FLiNaK熔盐中的腐蚀行为均表现出Cr, Mo的脱熔腐蚀特征, 无涂层合金表现出显著的沿晶腐蚀特征. Al₂O₃涂层并未提高合金的抗腐蚀性能, Al₂O₃涂层在FLiNaK熔盐中发生了溶解, 并与因Al₂O₃溶解脱落而裸露出来的合金表面形成腐蚀电池, 从而加速了GH3535合金的腐蚀.

关键词 ： GH3535合金, FLiNaK熔盐, Al₂O₃涂层, 腐蚀

Abstract：

As one of the most promising next generation reactors, the molten salt breeder reactor (MSBR) with excellent inherence security has attracted more and more attentions in recent years due to energy shortage and the security problem of traditional nuclear reactor. The most significant service characteristic of the structural material used in MSBR is the existence of FLiNaK molten salt compared with other nuclear reactors. FLiNaK molten salt is very corrosive to the structural material in the reactor, and affects the safety operation of nuclear power plants. A polycrystalline Ni-Mo-Cr-Fe superalloy was developed and used as an important structural material in MSBR at Oak Ridge National Laboratory (ORNL), but the corrosion mechanism of the alloy in FLiNaK molten salt has not been determined since the study terminated in 1970's as some politic reasons. Alloy served in harsh environments, often using protective coating to improve the corrosion properties. While few works about the coating corrosion resistance in FLiNaK molten salt were reported at present. Al₂O₃ and Cr₂O₃ coatings usually have excellent corrosion resistance in molten salt, such as sulphate, nitrate and halide molten salt. But, whether the oxide film has corrosion resistance in FLiNaK molten salt has not been determined. In this work, the corrosion mechanism of alloy in FLiNaK molten salt was studied by using immersion corrosion experiment through the method of SEM, EDS and XRD. The influence of Al₂O₃ coating on corrosion resistance in FLiNaK molten salt was also investigated. The results show that the Al₂O₃ coating does not affect the exsolution corrosion characteristics of Cr and Mo elements in FLiNaK molten salt at 700 ℃ for 400 h. The different is that naked alloy exhibits intergranular corrosion characteristic, and the alloy with Al₂O₃ coating exhibits spot corrosion characteristic. The Al₂O₃ coating cannot improve the corrosion resistance of the alloy in FLiNaK molten salt. The Al₂O₃ film dissolved in molten salt and resulted in the exposure of the alloy surface. The corrosion rate was increased since the formation of corrosion cell between oxide film and the exposed alloy surface.

Key words： GH3535 alloy FLiNaK molten salt Al₂O₃ coating corrosion

基金资助:* 中国科学院战略性先导科技专项资助项目XDA020404040

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https://www.ams.org.cn/CN/10.11900/0412.1961.2015.00132 或 https://www.ams.org.cn/CN/Y2015/V51/I9/1059

图 1 有无Al2O3涂层的GH3535合金在700 ℃ FLiNaK熔盐中腐蚀400 h后表面腐蚀形貌的SEM像

图 2 有无Al2O3涂层的GH3535合金在700 ℃ FLiNaK熔盐中腐蚀400 h后表面的XRD谱

图 3 无Al2O3涂层GH3535合金样品熔盐腐蚀后横截面腐蚀形貌的SEM像

图 4 无Al2O3涂层GH3535合金样品腐蚀后元素分布

图5 带Al2O3涂层GH3535合金样品横截面腐蚀形貌的SEM像

图6 带Al2O3涂层GH3535合金样品熔盐腐蚀后元素分布

图7 无Al2O3涂层GH3535合金在FLiNaK熔盐中腐蚀反应示意图

图8 Al2O3涂层在FLiNaK熔盐中腐蚀反应过程示意图

图9 Al2O3涂层破损后腐蚀反应过程示意图

[1]	Guerrieri C, Cammi A, Luzzi L. Prog Nucl Energ, 2013; 67: 56
[2]	Zou S L, Zou Y. J Univ South China (Soc Sci Ed), 2011; 12(2): 1 (邹树梁, 邹旸. 南华大学学报(社会科学版), 2011; 12(2): 1)
[3]	Zanetti M, Cammi A, Fiorina C, Luzzi L. Prog Nucl Energy, 2015; 83: 82
[4]	Jér?me S, Michel A, Ondrej B, Sylvie D, Olga F, Véronique G, Daniel H, David H, Victor I, Jan L K, Lelio L, Elsa M L, Jan U, Ritsuo Y, Dai Z. Prog Nucl Energy, 2014; 77: 308
[5]	Rosenthal M W, Kasten P R, Briggs R B. Nucl Appl Technol, 1970; 8: 107
[6]	Manly W D, Coobs J H, De Van J H, Douglas D A, Inouye H, Patriarca P, Roche T K, Scott J L. Prog Nucl Energy, 1960; 4: 164
[7]	Wang Y M. J Chin Soc Corros Prot, 1981; 1: 64 (罔毅民. 中国腐蚀与防护学报, 1981; 1: 64)
[8]	Nobuya I, Yukio M, Kazuo F, Yoshio K, Hiroshi K. Trans JWRI, 1980; 9: 117
[9]	Kondo M, Nagasaka T, Xu Q, Muroga T, Sagara A, Noda N, Ninomiya D, Nagura M, Suzuki A, Terai T, Fujii N. Fusion Eng Des, 2009; 84: 1081
[10]	Olson L C, Ambrosek J W, Sridharan K, Anderson M H, Allen T R. J Fluorine Chem, 2009; 130: 67
[11]	Cho S H, Park S B, Kang D S, Jeong M S, Park H, Hur J M, Lee H S. J Nucl Mater, 2010; 399: 212
[12]	Rahman A, Chawlab V, Jayaganthan R, Chandra R, Ambardar R. Mater Chem Phys, 2011; 126: 253
[13]	Dutta R S, Yusufali C, Paul B, Majumdar S, Sengupta P, Mishra R K, Kaushik C P, Kshirsagar R J, Kulkarni U D, Dey G K. J Nucl Mater, 2013; 432: 72
[14]	Ma J, Jiang S M, Gong J, Sun C. Corros Sci, 2012; 58: 251
[15]	Firouzi A, Shirvani K. Corros Sci, 2010; 52: 3579
[16]	Zheng D Y, Zhu S L, Wang F H. Surf Coat Technol, 2006; 200: 5931
[17]	Phahle A M, Hill A E, Calderwood J H. Thin Solid Films, 1974; 22: 67
[18]	Dasher B E, Farmer J, Ferreira J, Caro M S, Rubenchik A, Kimura A. J Nucl Mater, 2011; 419: 15
[19]	Liu T, Dong J S, Wang L, Li Z J, Zhou X T, Lou L H, Zhang J. J Mater Sci Technol, 2015; 31: 269
[20]	Ouyang F Y, Chang C H, You B C, Yeh T K, Kai J J. J Nucl Mater, 2013; 437: 201
[21]	Tyreman C J. PhD Dissertation, University of Manchester, Manchester, UK, 1986
[22]	Olson L C. PhD Dissertation, University of Wisconsin-Madison, Madison, USA, 2009
[23]	Fu G F, Wang J, Kang J. Trans Nonferr Met Soc China, 2008; 18: 743
[24]	Dreveton A. Procedia Eng, 2012; 46: 255
[25]	Cao C N. Principles of Electrochemistry of Corrosion. Beijing: Chemical Industry Press, 2008: 104 (曹楚南. 腐蚀电化学原理. 北京: 化学工业出版社, 2008: 104)

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