Effects of the oxidants H2O and CrF3 on the corrosion of pure metals in molten (Li,Na,K)F

被引：90
作者：
Wang, Yan Li [1 ]
Wang, Qian [1 ]
Liu, Hui Jun [1 ]
Zeng, Chao Liu [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Peoples R China
来源：
CORROSION SCIENCE | 2016年 / 103卷
基金：
中国国家自然科学基金;
关键词：
Ni; Fe; Cr; Molten; (Li; Na.K)F; Corrosion; LIF-NAF-KF; SALT; IMPEDANCE; FLINAK; SUPERALLOY; OXIDATION; BEHAVIOR; ALLOYS; STEEL; ACID;
D O I：
10.1016/j.corsci.2015.11.032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of two oxidizing species, H2O and CrF3, on the corrosion of pure metals Ni, Fe and Cr in molten (Li,Na,K)F at 700 degrees C were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. The results indicated that Ni, Fe and Cr were all in active dissolution state at the corrosion potential and the corrosion current densities were significantly increased when 2% H2O was introduced. However, the addition of CrF3 only accelerated the dissolution of Cr and Fe. Based on the impedance results, the diffusion coefficient of Cr3+ in the melt has been calculated to be 6.25 x 10(-4) cm(2) s(-1) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：268 / 282
页数：15
相关论文
共 21 条
  • [1] Electrochemical impedance spectroscopy for studying the degradation of enamel coatings
    Conde, A
    de Damborenea, JJ
    [J]. CORROSION SCIENCE, 2002, 44 (07) : 1555 - 1567
  • [2] DeVan J. H., 1977, ORNL/TM-5782
  • [3] Corrosion behaviour of stainless steels and a single crystal superalloy in a ternary LiCl-KCl-CsCl molten salt
    Hofmeister, M.
    Klein, L.
    Miran, H.
    Rettig, R.
    Virtanen, S.
    Singer, R. F.
    [J]. CORROSION SCIENCE, 2015, 90 : 46 - 53
  • [4] Investigation of the corrosion resistance of nickel-based alloys in fluoride melts
    Ignat'ev, V. V.
    Surenkov, A. I.
    Gnidoi, I. P.
    Fedulov, V. I.
    Uglovi, V. S.
    Panov, A. V.
    Sagaradze, V. V.
    Subbotin, V. G.
    Toropov, A. D.
    Afonichkin, V. K.
    Bove, A. L.
    [J]. ATOMIC ENERGY, 2006, 101 (04) : 730 - 738
  • [5] High temperature corrosion behaviour of a gradient NiCoCrAlYSi coating II: Oxidation and hot corrosion
    Jiang, S. M.
    Li, H. Q.
    Ma, J.
    Xu, C. Z.
    Gong, J.
    Sun, C.
    [J]. CORROSION SCIENCE, 2010, 52 (07) : 2316 - 2322
  • [6] Corrosion of reduced activation ferritic martensitic steel JLF-1 in purified Flinak at static and flowing conditions
    Kondo, Masatoshi
    Nagasaka, Takuya
    Tsisar, Valentyn
    Sagara, Akio
    Muroga, Takeo
    Watanabe, Takashi
    Oshima, Tomoko
    Yokoyama, Yukihiro
    Miyamoto, Hiroshi
    Nakamura, Eiji
    Fujii, Naoki
    [J]. FUSION ENGINEERING AND DESIGN, 2010, 85 (7-9) : 1430 - 1436
  • [7] Experimental and theoretical study for corrosion inhibition of mild steel in normal hydrochloric acid solution by some new macrocyclic polyether compounds
    Lebrini, M.
    Lagrenee, M.
    Vezin, H.
    Traisnel, M.
    Bentiss, F.
    [J]. CORROSION SCIENCE, 2007, 49 (05) : 2254 - 2269
  • [8] Materials corrosion in molten LiF-NaF-KF salt
    Olson, Luke C.
    Ambrosek, James W.
    Sridharan, Kumar
    Anderson, Mark H.
    Allen, Todd R.
    [J]. JOURNAL OF FLUORINE CHEMISTRY, 2009, 130 (01) : 67 - 73
  • [9] Effect of moisture on corrosion of Ni-based alloys in molten alkali fluoride FLiNaK salt environments
    Ouyang, Fan-Yi
    Chang, Chi-Hung
    You, Bo-Chien
    Yeh, Tsung-Kuang
    Kai, Ji-Jung
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2013, 437 (1-3) : 201 - 207
  • [10] Oxidation of single crystal PWA 1483 at 950 °C in flowing air
    Pfennig, A.
    Fedelich, B.
    [J]. CORROSION SCIENCE, 2008, 50 (09) : 2484 - 2492
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