フェライトの生成反応に及ぼすアニオンの影響 Effect of anion on the formation of ferrite

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抄録

Ferric oxide which is a principal raw material for ferrite production contains anion as impurities. Because it has been generally produced from iron chloride or iron sulfate solutions obtained from acid-cleaning waste liquid. In this paper, we have investigated the effect of anions on the formation of Ni ferrite. It is shown that the spinel phase is formed at lower temperature in the case of using iron oxide containing a small amount of chloride ions compare with that case of sulfate ions. It was also found that the formation of nickel chloride during calcination resulted in the low temperature formation of Ni ferrite, and that iron oxide was not affected in its own activity. The reaction mechanism for the low temperature formation of Ni ferrite is considered to being via the formation of nickel chloride. Solid state reaction for the formation of Ni ferrite in the NiC1<SUB>2</SUB>-Fe<SUB>2</SUB>O<SUB>3</SUB> system is phase boundary controlled. The activation energy in the NiC1<SUB>2</SUB>-Fe<SUB>2</SUB>O<SUB>3</SUB> system was much lower than that of the value of Ni ferrite formation in the NiO-Fe<SUB>2</SUB>O<SUB>3</SUB> system.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 45(7), 630-635, 1998-07-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002052377
  • 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
    4535706
  • 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  CJP引用  NDL  J-STAGE 
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