Method for producing quenched R-T-B—C alloy magnet

Details Method for producing quenched R-T-B—C alloy magnet Method for producing quenched R-T-B—C alloy magnet

2007-02-06

2007-02-06

Sheehan, John P. (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

C148S302000

Reexamination Certificate

active

10481025

ABSTRACT:
The present invention is a production method of an R-T-B—C rare earth alloy (R is at least one element selected from the group consisting of rare earth elements and yttrium, T is a transition metal including iron as a main component, B is boron, and C is carbon). An R-T-B bonded magnet containing a resin component, or an R-T-B sintered magnet with a resin film formed on the surface thereof is prepared, and a solvent alloy containing a rare earth element R and a transition metal element T is prepared. Thereafter, the R-T-B bonded magnet is molten together with the solvent alloy. In this way, a rare earth alloy can be recovered from a spent bonded magnet or a defective one generated in a production process stage, and a rapidly quenched alloy magnet can be obtained. As a result, magnet powder is recovered from the R-T-B magnet, and the recycling of a magnet including a resin component can be realized.

REFERENCES:
patent: 4983231 (1991-01-01), Yamanaka et al.
patent: 6319334 (2001-11-01), Ohashi et al.
patent: 6533837 (2003-03-01), Yamagata et al.
patent: 2003/0041920 (2003-03-01), Hoshi et al.
patent: 1127797 (1996-07-01), None
patent: 1223182 (1999-07-01), None
patent: 1261718 (2000-08-01), None
patent: 05-055018 (1993-03-01), None
patent: 07-111208 (1995-04-01), None
patent: 08-273959 (1996-10-01), None
Chun Long—Office Action dated Jan. 10, 2005 in Appln. No. 02801400.6.

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