Metal treatment – Stock – Magnetic
Reexamination Certificate
2003-12-24
2009-11-24
Sheehan, John P. (Department: 1793)
Metal treatment
Stock
Magnetic
C148S104000, C148S403000, C075S230000, C075S246000
Reexamination Certificate
active
07622011
ABSTRACT:
Disclosed is a Fe—Ga—P—C—B—Si based metallic glass alloy particle prepared by a gas atomizing process, which has an approximately complete spherical shape, a relatively large particle size and a high crystallization temperature (Tx). The plurality of particles may be subjected to a spark plasma sintering process at the crystallization temperature or less under a compression pressure of 200 MPa or more, to provide a bulk Fe-based sintered metal soft magnetic material of metallic glass, which has a high density, a single phase structure of metallic glass in an as-sintered state, excellent soft magnetic characteristics applicable to a core of a magnetic head, a transformer or a motor, and a high specific resistance.
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Inoue Akihisa
Shen Baolong
Japan Science and Technology Agency
Sheehan John P.
Westerman Hattori Daniels & Adrian LLP
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