Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Effects of Oxidant on the Properties of Sr-ferrites Using Mill Scale

밀 스케일을 사용한 Sr-페라이트의 특성에 미치는 산화제의 영향

  • 조태식 (경북대학교 나노소재공학부 신소재공학) ;
  • 최승덕 (포항산업과학연구원 재료공정연구소 원천소재연구본부)
  • Received : 2010.11.09
  • Accepted : 2011.01.04
  • Published : 2011.02.01
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Abstract

We have been studied the effects of oxidant on the properties of Sr-ferrite magnets using mill scale for motor. The small-added (0.5 wt%) $NaNO_3$ oxidant improved significantly the degree of oxidation and the grindability of mill scale, and then highly enhanced the magnetic properties of anisotropic Sr-ferrite sintered magnets; such as the remanent flux density from 3.55 to 3.80 kG, the intrinsic coercivity from 2.75 to 3.22 kOe, and the maximum energy product from 2.90 to 3.45 MGOe.

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References

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