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公开(公告)号：US3630667A
公开(公告)日：1971-12-28
申请号：US3630667D
申请日：1969-04-01
Applicant: STACKPOLE CARBON CO
Inventor： SHIRK BRIAN THOMAS
CPC classification number: C04B35/2683 , C01G49/0036 , C01P2002/02 , C01P2006/42
Abstract: In accordance with this invention barium ferrite hard magnetic materials are produced by quenching a molten homogeneous composition of B2O3, BaO and Fe2O3 within the area ABCD of FIG. 1 to form a homogeneous, substantially noncrystalline glass, heating the quenched glass to nucleate and crystallize barium ferrite in a borate-rich matrix, and separating the matrix material from the crystallized barium ferrite.
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