Activity of Aluminum in Pt-Al Solid Solution by EMF Method with CaF_2 Solid Electrolyte

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Activity of aluminum in platinum-aluminum solid solution was determined by the electrochemical cell technique at temperatures ranging from 913 K to 1050 K. The following cell system was used:<BR>Pt–Al alloys, AlF<SUB>3</SUB>/CaF<SUB>2</SUB>/Co, CoF<SUB>2</SUB><BR>The values of activity of Al, <I>a</I><SUB>Al</SUB>, in Pt solid solution with 4.6 mol% Al and 9.4 mol% Al are, respectively, represented by:<BR>Pt-4.6 mol% Al: log<I>a</I><SUB>Al</SUB>=−1.140−1.337×10<SUP>4</SUP><I>T</I><SUP>−1</SUP>±0.152<BR>and<BR>Pt-9.4 mol% Al: log<I>a</I><SUB>Al</SUB>=−3.167−1.083×10<SUP>4</SUP><I>T</I><SUP>−1</SUP>±0.102<BR>The value of <I>a</I><SUB>Al</SUB> in Pt-13.1 mol% Al alloy, which is comprised of the two-phase region of Pt(Al) solid solution and Pt<SUB>3</SUB>Al, is expressed as follows:<BR>Pt-13.1 mol% Al: log<I>a</I><SUB>Al</SUB>=−3.523−1.033×10<SUP>4</SUP><I>T</I><SUP>−1</SUP>±0.081

収録刊行物

  • Materials transactions, JIM

    Materials transactions, JIM 39(12), 1238-1242, 1998-12-01

    社団法人 日本金属学会

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各種コード

  • NII論文ID(NAID)
    10003805068
  • NII書誌ID(NCID)
    AA10699969
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09161821
  • NDL 記事登録ID
    111201
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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