サドル-サドル型偏向ヨークコア用低収縮材料の開発 Development of Low Shrinkage Material for Saddle-saddle Type Deflection Yoke Core

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著者

    • 藤田 助男 FUJITA Sukeo
    • 九州松下電器(株) 熊本電子部品(事) Kumamoto Electronic Components Div., Kyushu Matsushita Electric Co., Ltd.

抄録

With regard to the CRT display, the deflection yoke is required to achieve higher picture quality. To achieve it, we currently use the ferrite core of which inner surface was ground. The picture quality is closely related to the inside diameter of the ferrite core. Therefore, we made a study on the heat shrinkage of the ferrite core to be used for the saddle-saddle type deflection yoke. We are reporting here the method of reducing the shrinkage of the ferrite core to improve the accuracy of its inside diameter. With a view to achieving higher bulk density (BD), we selected optimum iron oxide out of main materials in various conditions and improved both the uniformity of the diffusion of polyvinyl alcohol (PVA) and the particle size distribution. As a result, we could reduce the shrinkage of the ferrite core from 14.5% to 10.0%. By this method, we could achieve the same performance of the deflection yoke as in the case of the ferrite core of which inner surface was ground.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 43(9), 1101-1105, 1996-09-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002013068
  • 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
    4036694
  • 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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