Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Silica Coating on Particle Shape and Magnetic Properties of Iron Powder (II)

실리카 피착이 철분말의 입자형태 및 자기특성에 미치는 영향(제2보)

  • 오재희 (인하대학교 공과대학 무기재료공학과) ;
  • 김종식 (인하대학교 공과대학 무기재료공학과) ;
  • 류병환 (인하대학교 공과대학 무기재료공학과)
  • Published : 1986.02.01
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Abstract

The effect of dehydration temperature on the reduction process of silica-coated hematite was invest-igated The particle shape and magnetic properties of the products reduced from hematite at various conditions and the oxidation resistance of silica-coated iron powder were examined. It was revealed that single phase iron powder obtained over 45$0^{\circ}C$ had good magnetic properties. The iron powder manufactured between 45$0^{\circ}C$ and 50$0^{\circ}C$ displayed the maximum coercive force as a result of maintaining its acicular shaped. However the coercive force of iron powder reduced over 50$0^{\circ}C$ was decreased. The oxidation resistance of silica-coated iron powder in air was very good up to 11$0^{\circ}C$ and for 12 days.

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