Ln-O(Ln=La, Pr, Nd)固溶体の熱力学的性質および溶融塩電解によるこれらの固溶体の脱酸 Thermodynamic Properties of Ln-O(Ln=La, Pr, Nd)Solid Solutions and Their Deoxidation by Molten Salt Electrolysis

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The lanthanide metals lanthanum, praseodymium and neodymium containing 2,200, 2,600, 1,850 mass ppm oxygen, respectively, were deoxidized to 20-30 ppm level at 1,073 K by an electrochemical method. The metal to be deoxidized was used as the cathode in an electrolysis cell which consisted of a graphite anode and molten CaCl2 electrolyte. The calcium metal produced at the cathode by electrolysis effectively deoxidized the lanthanide metal. Calcium oxide produced by deoxidation, dissolved in the melt. The liberation of carbon monoxide/dioxide at the anode was found to prevent accumulation of oxygen in the melt. For a quantitative discussion of the limits of deoxidation achievable by this technique, a thermodynamic investigation of the lanthanide-oxygen (Ln-O ; Ln = La, Pr, Nd) solid solutions was conducted. The lanthanide metal, yttrium and titanium samples were immersed in calcium-saturated CaCl2 melt, containing a small quantity of dissolved CaO, at 1,093 K. The oxygen potential of the melt and the Ln-O solid solutions were obtained from the oxygen content of yttrium samples at equilibrium, and the known thermodynamic properties of yttrium-oxygen solid solution. The results were confirmed by using Y/Y2O3 equilibrium to control the oxygen potential of the molten salt reservoir. The oxygen affinity of the metals was found to decrease in the order : Y > Ti > Nd > Pr > La. The deoxidation results are consistent with the thermodynamic properties of the RE-O solid solutions.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 114(11), 813-818, 1998-10

    The Mining and Materials Processing Institute of Japan

参考文献:  23件中 1-23件 を表示

  • <no title>

    BARIN I.

    Thermochemical data of pure substances, 1989

    被引用文献53件

  • <no title>

    EASTMAN E. D.

    Chemistry and Metallurgy of Miscellaneous Materials 10, 1950

    被引用文献1件

  • <no title>

    GSCHNEIDNER Jr

    J. Alloys Compounds 193, 1-6, 1993

    被引用文献1件

  • <no title>

    KAMIHARA K.

    Mater. Trans. JIM 34, 243-247, 1993

    被引用文献1件

  • <no title>

    MADELUNG O.

    Landolt-Bonstein Numerical Data and Functional Relationships in Science and Technology 26, 1982

    被引用文献1件

  • <no title>

    MASSALSKI T. B.

    Binary Alloy Phase Diagrams, 1990

    被引用文献53件

  • <no title>

    OKABE T. H.

    Tetsu-to-Hagane 77, 93-99, 1991

    被引用文献5件

  • <no title>

    OKABE T. H.

    J. Alloys Compounds 237, 155-164, 1996

    被引用文献1件

  • <no title>

    SANO H.

    Proc. Fall Meeting of MMIJ(Mining and Materials Processing Institute of Japan), Sapporo, 99-99, 1997

    被引用文献1件

  • <no title>

    SHINDO Y.

    Proc. Fall Meeting of MMIJ(Mining and Materials Processing Institute of Japan), Sapporo, 46-47, 1992

    被引用文献1件

  • <no title>

    THREADGILL W. D.

    J. Electrochem., Soc. 112, 632, 1965

    被引用文献1件

  • <no title>

    CARLSON O. N.

    J. Less-Common Metals 35, 275-284, 1974

    DOI 被引用文献1件

  • <no title>

    CORBETT J. D.

    J. Less-Common Metals 115, 343-355, 1986

    被引用文献1件

  • <no title>

    FORT D.

    J. Less Common Metals 134, 27-44, 1987

    被引用文献3件

  • <no title>

    FORT D.

    J. Less-Common Metals 81, 273-292, 1981

    被引用文献1件

  • <no title>

    GUPTA C. K.

    Int. Mater. Rev. 37, 197-248, 1992

    被引用文献3件

  • セリウムの酸素溶解度

    黒田 健介 , 高井 章治 , 藤澤 敏治 , 興戸 正純 , 山内 睦文

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 112(12), 893-897, 1996-08-10

    J-STAGE DOI 参考文献16件 被引用文献2件

  • <no title>

    MATTOCKS P. G.

    J. Less-Common Metals 53, 253-263, 1977

    被引用文献3件

  • <no title>

    MUIRHEAD C. M.

    J. Less-Common Metals 50, 73, 1976

    DOI 被引用文献1件

  • <no title>

    OGAWA O.

    J. Alloys Compounds 193, 17-19, 1993

    被引用文献1件

  • <no title>

    OKABE T. H.

    J. Alloys Comp. 184, 43, 1992

    被引用文献9件

  • <no title>

    OKABE T. H.

    Metall. Trans. B 24B, 449-456, 1993

    被引用文献6件

  • <no title>

    OKABE T. H.

    Metall. Mater. Trans. B 27B, 841-847, 1996

    被引用文献2件

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10002468354
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    4592352
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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