발간논문

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Vol.29, No.5, 500 ~ 507, 1991
Title
The Effect of Hot - Pressing on the Magnetic Properties for R - Fe - B Alloy (1) ( The Effect of Hot - Pressing and Heat Treatment on the magnetic Properties for Pr - Fe - B - Cu Permanent Magnet )
김동엽D . Y . Kim, 정원용W . Y . Jeung, 강일구I . K . Kang, 오재현J . H . Oh
Abstract
Hot-pressing of cast Pr-Fe-B-Cu alloys was carried out as a new manufacturing process for R (Pr)-Fe-B permanent magnets. And the effects of hot-pressing variables and heat treatment on the magnetic properties of Pr-Fe-B-Cu magnets were investigated. Pr-Fe-B-Cu ingot consists of Pr₂Fe_(14)B, Pr rich phase and elemental Fe. It is thought that Fe diffused into Pr₂Fe_(14)B phase during heat treatment at 1000℃ or hot-pressing of Pr-Fe-B-Cu alloys. Hot-pressing of Pr-Fe-B-Cu alloys induced magnetic anisotropy to the direction of hot working. The most optimal strain rate for hot-pressing of Pr-Fe-B alloys was ε˙=0.001/sec.
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