발간논문

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Vol.29, No.7, 717 ~ 724, 1991
Title
The Effect of Hot - Pressing on the Magnetic properties for R - Fe - B Alloy (3) ( A Study on the Anisotropy for R - Fe - B Permanent Magnet Prepared by Hot - Pressing )
김동엽D . Y . Kim, 정원용W . Y . Jeung, 강일구I . K . Kang, 오재현J . H . Oh
Abstract
The anisotropy of R(R=Pr, Nd)-Fe-B-Cu magnets prepared by hot-pressing was investigated. For that purpose, anisotropy factor(f_a)was introduced. Also, the effects of thickness reduction ratio, working temperatures and heat treatment on the magnetic properties for R-Fe-B-Cu magnets were studied. Induced anisotropy parallel to press direction by hot-pressing was confimed through the variation of magnetic properties and domain patterns of R-Fe-B-Cu magnets. Anisotropy factors were increased according to the increment of thickness reduction and working temperature. But heat treatment of the R-Fe-B-Cu magnets had no relation with anisotropy factors. Irregularities and swelling of the specimen during the pressing were alluded.
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