XIN Chang-sheng, WANG Hui, HAI Zheng-yin, HU Yong, CAI Min, CHEN Tong. Study on Corrosion Resistance and Semiconductor Property for Passive Film of Nuclear Grade Stainless Steel Welding Joint[J]. Atomic Energy Science and Technology, 2015, 49(2): 316-323. DOI: 10.7538/yzk.2015.49.02.0316
Citation: XIN Chang-sheng, WANG Hui, HAI Zheng-yin, HU Yong, CAI Min, CHEN Tong. Study on Corrosion Resistance and Semiconductor Property for Passive Film of Nuclear Grade Stainless Steel Welding Joint[J]. Atomic Energy Science and Technology, 2015, 49(2): 316-323. DOI: 10.7538/yzk.2015.49.02.0316

Study on Corrosion Resistance and Semiconductor Property for Passive Film of Nuclear Grade Stainless Steel Welding Joint

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  • The corrosion resistance and semiconductor property of passive film formed on the surface of welding joint of 316LN/316L stainless steel in simulated high temperature and high pressure primary water of PWR were investigated through EIS, SEM, AES and Mott-Schottky methods. The test results show that the passive films formed on weld metal (WM) zone, heat affect zone (HAZ) and base metal (BM) zone have different corrosion resistance properties. Both the open circuit potential (OCP) and electrochemical impedance values of passive film formed on HAZ are lower than that of the other zones. This shows that HAZ passive film has the worst corrosion resistance. It’s related to film’s density, thickness and content of chromium oxide. The Mott-Schottky curve reveals that the flat band potential of BM zone passive film is -0.7 V, which is shifted negative compared with the other zones (-0.4 V). The change of Efb was discussed as a function of anions (BO-3) adsorption on surface of passive film. With lower donor and acceptor density, preventing the adsorption of Cl- in passive film, the corrosion resistance of BM zone is better than that of the other zones.
  • [1]
    李春胜,黄德彬. 金属材料手册[M]. 北京:化学工业出版社,2005:571-572.
    [2]
    CUNHA B M D, WALLS M, HAKIKI N E, et al. Composition, structure and properties of the oxide films formed on the stainless steel 316L in a primary type PWR environment[J]. Corrosion Science, 1998, 40(2): 447-463.
    [3]
    韩恩厚,王俭秋,吴欣强,等. 核电高温高压水中不锈钢和镍基合金的腐蚀机制[J]. 金属学报,2010,46(11):1379-1390.HAN Enhou, WANG Jianqiu, WU Xinqiang, et al. Corrosion mechanisms of stainless steel and nickel base alloys in high temperature high pressure water[J]. Acta Metallurgica Sinica, 2010, 46(11): 1379-1390(in Chinese).
    [4]
    林玉华,杜荣归,胡融刚,等. 不锈钢钝化膜耐蚀性与半导体特性的关联研究[J]. 物理化学学报,2005,21(7):740-745.LIN Yuhua, DU Ronggui, HU Ronggang, et al. A correlation study of corrosion resistance and semiconductor properties for the electrochemically modified passive film of stainless steel[J]. Acta Physico Chimica Sinica, 2005, 21(7): 740-745(in Chinese).
    [5]
    WIJESINGHE T L S L, BLACKWOOD D J. Photocurrent and capacitance investigations into the nature of the passive films on austenitic stainless steels[J]. Corrosion Science, 2008, 50(1): 23-34.
    [6]
    MONTEMOR M F, FERREIRA M G S, HAKIKI N E, et al. Chemical composition and electronic structure of the oxide films formed on 316L stainless steel and nickel based alloys in high temperature aqueous environments[J]. Corrosion Science, 2000, 42(9): 1635-1650.
    [7]
    LIPPOLD C J, KOTECKI D J. Welding metallurgy and weldability of stainless steels[M]. America: Wiley Blackwell, 2005: 140-151.
    [8]
    LU Z P, SHOJI T, MENG F J, et al. Characterization of microstructure and local deformation in 316NG weld heat-affected zone and stress corrosion cracking in high temperature water[J]. Corrosion Science, 2011, 53(5): 1916-1932.
    [9]
    DADFAR M, FATHI M H, KARIMZADEH F, et al. Effect of TIG welding on corrosion behavior of 316L stainless steel[J]. Materials Letters, 2007, 61: 2343-2346.
    [10]
    李光福,李冠军,方可伟,等. 异材焊接件A508/52M/316L在高温水环境中的应力腐蚀破裂[J]. 金属学报,2011,47(7):797-803.LI Guangfu, LI Guangjun, FANG Kewei, et al. Stress corrosion cracking behavior of dissimilar metal weld A508/52M/316L in high temperature water environment[J]. Acta Metallurgica Sinica, 2011, 47(7): 797-803(in Chinese).
    [11]
    YEH T K, HUANG G R, WANG M Y, et al. Stress corrosion cracking in dissimilar metal welds with 304L stainless steel and Alloy 82 in high temperature[J]. Progress in Nuclear Energy, 2013, 63: 7-11.
    [12]
    LISTER D H, GODIN M S. The effect of dissolved zinc on the transport of corrosion products in PWRs[R]. Canada: Atomic Energy of Canada Limited, 1990.
    [13]
    SHINTANI D, ISHIDA T, IZUMI H, et al. XPS studies on passive film formed on steel in a high-temperature and high-pressure methanol solution containing chloride ions[J]. Corrosion Science, 2008, 50(10): 2840-2845.
    [14]
    OHTSUKA T, HYONO A, SASAKI Y. Potential modulation reflectance of passivated type 304 stainless steel in sulfuric acid solution[J]. Electrochimica Acta, 2012, 60: 384-391.
    [15]
    ZENG Y M, LUO J L. Electronic band structure of passive film on X70 pipeline steel[J]. Electrochimica Acta, 2003, 48: 3551-3562.

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