Metal treatment – Stock – Magnetic
Reexamination Certificate
2002-02-07
2008-12-30
Sheehan, John P. (Department: 1793)
Metal treatment
Stock
Magnetic
C148S103000, C148S101000
Reexamination Certificate
active
07470334
ABSTRACT:
A method for manufacturing a sintered compact includes the steps of preparing an alloy powder having a composition represented by Expression 1: RTW(where, R is at least one kind of rare earth metal, T is at least one kind of transition metal, and w defines a relation of 1<w<4), sintering the alloy powder in a vacuum atmosphere or an atmosphere containing gas with a molecular weight of 30 or less, and processing the alloy powder by a hot isostatic pressing. The sintered compact has a high density, and reduces deteriorations in its sintered compact properties such as magnetostrictive properties in an air atmosphere at high-temperatures.
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Mori Teruo
Nomura Takeshi
Tokoro Seigo
Umehara Naomichi
Hogan & Hartson LLP
Sheehan John P.
TDK Corporation
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