低温焼成・無収縮Ni-Cu-Znフエライト材料 Non-Shrinkage Ni-Cu-Zn Ferrites sintered at low temperature

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著者

    • 松谷 伸哉 MATSUTANI Nobuya
    • 松下電子部品(株)・開発技術センター・材料開発研究所 Corporate Components Development Center, Matsushita Electronic Component Co., LTD
    • 藤井 浩 FUJII Hiroshi
    • 松下電子部品(株)・開発技術センター・材料開発研究所 Corporate Components Development Center, Matsushita Electronic Component Co., LTD
    • 原田 真二 HARADA Shinji
    • 松下電子部品(株)・開発技術センター・材料開発研究所 Corporate Components Development Center, Matsushita Electronic Component Co., LTD

抄録

We have developed a Non-Shrinkage Ferrites "NSF" having near-net-shape by adding metallic Fe and sintered at high temperature (about 1200°C). In this work, we report low temperature (under the melting point of Ag, 960°C) sintered NSF. The control of the degree of NSF shrinkage is possible through utilizing both the expansion caused by the oxidation of metallic Fe and the complex chemical reaction allowed with NiO, ZnO, and CuO during sintering up to 920°C. In the case of low temperature sintering, high density NSF cannot be realized because non-uniform grain caused by the extreme oxidation of metallic Fe remains. It is found that addition of low-melting point oxides to the NSF permits effectively the NSF's microstructure to make uniform and compact. XRD and VSM show these NSF have the complete spinel crystal structure of ferrite. As a result, the shrinkage of low temperature sintered NSF is extremely small (-0.4%) and their magnetic characteristics are actually identical with those of conventional low temperature sintered ferrites.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 46(1), 98-102, 1999-01-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002053683
  • 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
    4640007
  • 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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