Bi_2Sr_2CaCu_2O_y超伝導体の電気化学的還元反応の制御 The Control of Electrochemical Reduction on Bi_2Sr_2CaCu_2O_y Superconductor

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We experimented with investigation of the model of electrochemical reduction in electrochemical treatment on Bi<SUB>2</SUB>Sr<SUB>2</SUB>CaCu<SUB>2</SUB>O<SUB>Y</SUB> superconductor by using methyl alcohol as solvent and three materials: Ca(NO<SUB>3</SUB>)<SUB>2</SUB>⋅4H<SUB>2</SUB>O, CuSO<SUB>4</SUB>⋅5H<SUB>2</SUB>O and Cu(NO<SUB>3</SUB>)<SUB>2</SUB>⋅3H<SUB>2</SUB>O as solutes. The samples before and after the treatment were investigaited by X-ray diffraction, fluorescent X-ray analysis and resistivity measurement.<BR>As a result, we suggested two model of reduction such as<BR>(1)Bi<SUB>2</SUB>Sr<SUB>2</SUB>CaCu<SUB>2</SUB>O<SUB>8</SUB>+ (x+y)Ca<SUP>2+</SUP>+ 2(x+y)e<SUP>-</SUP>→Bi<SUB>2</SUB>Sr<SUB>2</SUB>Ca<SUB>1+x</SUB>Cu<SUB>2</SUB>O<SUB>8</SUB>+ yCa<BR>(2)Bi<SUB>2</SUB>Sr<SUB>2</SUB>CaCu<SUB>2</SUB>O<SUB>8</SUB>+ (x+y)Cu<SUP>2+</SUP>+ 2(x+y)e<SUP>-</SUP>→ Bi<SUB>2</SUB>Sr<SUB>2</SUB>CaCu<SUB>2+X</SUB>O<SUB>8</SUB>+ yCu<BR>where (x+y) is constant in each quantity of electricity and y is much greater than x. However x and y were so randomly variable that it was very difficult to control of electrochemical reduction.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 45(2), 125-128, 1998-02-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002015026
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4413735
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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