Magnetic properties of high silicon steel processed by powder metallurgy

분말야금 공정에 의한 고규소강의 자성특성

  • 임태홍 (한국기계연구소 소재성형실) ;
  • 정형식 (한국기계연구소 소재성형실) ;
  • 강원구 (한국전력공사 기술연구원) ;
  • 정영호 (한국전력공사 기술연구원)
  • Published : 1990.07.05

Abstract

Soft magnetic silicon steels containing up to 6.5wt% of silicon were prepared by powder metallurgical processing and their magnetic properties were evaluated. The magnetic properties of P/M silicon steels are similarly affected by the silicon addition as those of conventional ingot processed ones but are also significantly affected by density and interstitial impurities particularly oxygen content. Magnetic flux density, $B_{10}$ and coercivity, Hc, tends to decrease with silicon content whereas maximum permeability, ${\mu}m$, decreases first and then increases rapidly above 5 wt% silicon. Increasing density also increases magnetic flux density and maximum permeability but reduces coereivity. The latter two properties are, however, affected more strongly with oxygen content.

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