Metal treatment – Stock – Magnetic
Patent
1994-05-05
1995-08-01
Sheehan, John
Metal treatment
Stock
Magnetic
420 82, 420121, 75244, H01F 1057
Patent
active
054377412
ABSTRACT:
A corrosion-resistant rare earth metal-transition metal-boron permanent magnet having improved corrosion resistance and excellent magnetic properties, including RE: 10-25 at % (where RE is at least one of Y, Sc and lanthanides), B: 2-20 at % and the remainder being substantially Fe, Co and Ni. In this case, the magnet has an average crystal grain size of 0.1-50 .mu.m and includes a crystal grain boundary phase of RE(Ni.sub.1-x-y Co.sub.x Fe.sub.y) compound having a thickness of not more than 10 .mu.m.
REFERENCES:
patent: 4792368 (1988-12-01), Sagawa et al.
Fujita Akira
Fukuda Yasutaka
Kitano Yoko
Ozaki Yukiko
Shimomura Junichi
Kawasaki Steel Corporation
Sheehan John
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