Abstract
Magnetic and physical properties of sintered bodies prepare from waste sintered barium hexaferrite magnets which were come from fabrication process of isotropic permanent magnets were investigated. The properties of the sintered bodies were characterized by XRD, XRF, SEM, and BH curve tracer. After the waste permanent magnets were milled and granulated, the granules of the waste permanent magnet powders and the commercial granules were mixed with various proportions, pressed, and sintered. although the magnetic properties were decreased gradually with the content of waste magnet powder, the magnetic characteristics of the sintered magnets at $1150~1200^{\circ}C$ were comparable to those required for isotropic permanent magnets.
등방성 영구자석의 제조과정에서 발생되고 있는 barium hexaferrite 폐 자석으로 소결체를 제조하여 물리적, 자기적 특성을 조사하였다. 소결체는 XRD, XRF, SEM 및 자기적 성질을 측정하였다 폐 영구자석을 분쇄하고 조립화하여 폐 영구자석 분말 과립과 시판용 과립을 일정비율로 혼합. 성형하고 소결하였다. 폐 영구자석 분쇄분말의 함량에 따라 자기적 특성은 점차 감소하지만 소결 온도 $1150~1200^{\circ}C$ 에서 영구자석으로서 요구되는 자기적 특성값을 나타내었다.
