Metal treatment – Stock – Magnetic
Patent
1996-04-18
1997-08-12
Sheehan, John
Metal treatment
Stock
Magnetic
420 83, 420121, 148101, 148104, H01F 1057
Patent
active
056561008
ABSTRACT:
An alloy ingot for permanent magnet consists essentially of rare earth metal and iron and optionally boron. The two-component alloy ingot contains 90 vol % or more of crystals having a crystal grain size along a short axis of 0.1 to 100 .mu.m and that along a long axis of 0.1 to 100 .mu.m. The three-component alloy ingot contains 90 vol % or more of crystals having a crystal grain size along a short axis of 0.1 to 50 .mu.m and that along a long axis of 0.1 to 100 .mu.m. The alloy ingot is produced by solidifying the molten alloy uniformly at a cooling rate of 10.degree. to 1000.degree. C./sec. at a sub-cooling degree of 10.degree. to 500.degree. C. A permanent magnet and anisotropic powders are produced from the alloy ingot.
REFERENCES:
patent: 4496395 (1985-01-01), Croat
patent: 4536233 (1985-08-01), Okonogi et al.
patent: 4921551 (1990-05-01), Vernia et al.
patent: 4981532 (1991-01-01), Takeshita et al.
patent: 5067551 (1991-11-01), Murakami et al.
patent: 5127970 (1992-07-01), Kim
patent: 5172751 (1992-12-01), Croat
patent: 5221770 (1993-06-01), Ishiguro et al.
patent: 5314548 (1994-05-01), Panchanathan et al.
patent: 5431747 (1995-07-01), Takebuchi et al.
Miyake Yuichi
Okada Chikara
Yamamoto Kazuhiko
Santoku Metal Industry Co. Ltd.
Sheehan John
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