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    YU Jin-jin, LU Gui-min, SHANG Shu-zhen, YU Jian-guo. Corrision Behavior of 310S and AL-6XN Steels in Molten MgCl2[J]. Corrosion & Protection, 2011, 32(1): 12-16.
    Citation: YU Jin-jin, LU Gui-min, SHANG Shu-zhen, YU Jian-guo. Corrision Behavior of 310S and AL-6XN Steels in Molten MgCl2[J]. Corrosion & Protection, 2011, 32(1): 12-16.

    Corrision Behavior of 310S and AL-6XN Steels in Molten MgCl2

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    • Received Date: April 25, 2010
    • The corrosion behaviors of 310S and AL-6XN steels in MgCl2 molten salts were studied. The corrosion products and cross-section were amalyzed by means of X-ray diffraction (XRD) and metallurgical microscopy. Both steels showed uniform corrosion. 310S had a higher initial corrosion rate than AL-6XN. The corrosion rate of both steels was slowed down and trended to zero afterward. According to the corrosion depth, corrosion grades of 310S and AL-6XN were classified as 9 and 8 respectively, indicating insufficient corrosion resistance. These two corrosion processes belonged to 3D diffusion (Ginstring-Brounshtein) kinetic model. The reaction constants were 0.0048 and 0.0081 respectively, and the kinetic equations were obtained. AL-6XN showed better corrosion resistance than 310S in MgCl2 molten salts.
    • [1]
      Rapp R A. Hot corrosion of materials: a fluxing mechanism[J]. Corrosion Science,2002,44(2):209-221.
      [2]
      Uusitalo M A,Vuoristo P M J,Mantyla T A. High temperature corrosion of coatings and boiler steels below chlorine-containing salt deposits[J]. Corrosion Science,2004,46(9):1311-1331.
      [3]
      Gonzalez J G,Haro S,Martinez-Villafane A,et al. Corrosion performance of heat resistant alloys in Na2SO4-V2O5 molten salts[J]. Materials Science & Engineering,2006(435/436):258-265.
      [4]
      Zhu B,Lindbergh G. Corrosion behaviour of high-chromium ferritic steels in molten carbonate in cathode environment[J]. Electrochimica Acta,2001, 46(17):2593-2604.
      [5]
      曾潮流, 吴维弢. Ni-Ti合金在熔融(Li,K)2CO3中的腐蚀行为研究[J]. 金属学报, 2000,36(5):517-520.
      [6]
      Cho S H,Hur J M,Seo C S,et al. Hot corrosion behavior of Ni-base alloys in a molten salt under an oxidizing atmosphere[J]. Journal of Alloys and Compounds,2009,468(1/2):263-269.
      [7]
      Cho S H,Hur J M,Seo C S,et al. High temperature corrosion of superalloys in a molten salt under an oxidizing atmosphere[J]. Journal of Alloys and Compounds,2008,452(1):11-15.
      [8]
      Frangini S,Loreti S. The role of temperature on the corrosion and passivation of type 310S steel in eutectic(Li+K) carbonate melt[J]. Journal of power sources,2006,160(2):800-804.
      [9]
      马海涛, 王来. 310SS在KCl盐膜下高温空气中腐蚀机理[J]. 大连理工大学学报,2002,42(6):687-691.
      [10]
      孟丽君,邢辉,庞淦文, 等. AL6XN超级奥氏体钢的高温蠕变及疲劳行为研究[J]. 原子能科学技术,2009,43(6):509-513.
      [11]
      Huang Y L,Oguocha I N A,Yannacopoulos S. The corrosion wear behaviour of selected stainless steels in potash brine[J]. Wear,2005,258(9):1357-1363.
      [12]
      Fritz J D,Gerlock R J. Chloride stress corrosion cracking resistance of 6% Mo stainless steel alloy (UNS N08367)[J]. Desalination,2001,135(1/3):93-97.
      [13]
      Wu Y L,Huang X F,Yang M D,et al. Study on the mechanisms and kinetics of complex’s thermal decomposition getting anhydrous magnesium chloride[J]. Journal of Analytical and Applied Pyrolysis,2008,81(1):133-135.
      [14]
      Kipouros G J,Sadoway D R. A thermochemical analysis of the production of anhydrous MgCl2[J]. Journal of Light Metals,2001,1(2):111-117.
      [15]
      Fernandez J F,Cuevas F,Sanchez C. Surface activation and hydrogenation kinetics of Ti sponge[J]. International Journal of Hydrogen Energy,1996,21(9):765-768.
      [16]
      梁成浩. 金属腐蚀学导论[M]. 北京:机械工业出版社, 1999.
      [17]
      胡荣祖,史启祯. 热分析动力学[M]. 北京: 科学出版社,2001.
      [18]
      陈艺锋,彭长宏,唐谟堂. 锌蒸气的氧化行为与氧化锌的结晶形貌[J]. 高等学校化学学报,2005,26(2):213-217.
      [19]
      李远士,牛焱, 吴维弢. 金属材料的高温氯化腐蚀[J]. 腐蚀科学与防护技术,2000,12(1):41-44.

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