Rare earth magnet alloy ingot, manufacturing method for the...

Details Rare earth magnet alloy ingot, manufacturing method for the... Rare earth magnet alloy ingot, manufacturing method for the...

2006-03-21

2006-03-21

Sheehan, John P (Department: 1742)

Metal treatment

Stock

Magnetic

C420S083000, C420S121000

Reexamination Certificate

active

07014718

ABSTRACT:
One object of the present invention is to provide a rare earth magnet alloy ingot, which has improved magnetic properties. In order to achieve the object, the present invention provides a rare earth magnet alloy ingot, wherein the rare earth magnet alloy ingot comprises an R-T-B type magnet alloy (R represents at least one element selected from among rare earth elements, including Y; and T represents a substance predominantly comprising Fe, with a portion of Fe atoms being optionally substituted by Co, Ni, Cu, Al, Ga, Cr, and Mn.) containing at least one element selected from among Nd, Pr, and Dy in a total amount of 11.8 to 16.5% by atom and B in an amount of 5.6 to 9.1% by atom; and wherein as determined in an as-cast state of the alloy ingot, R-rich phase that measures 100 μm or more is substantially absent on a cross section.

REFERENCES:
patent: 5908513 (1999-06-01), Sasaki et al.
patent: 5930582 (1999-07-01), Ito et al.
patent: 5963774 (1999-10-01), Sasaki et al.
patent: 6045629 (2000-04-01), Hasegawa et al.
patent: 6419723 (2002-07-01), Hirota et al.
patent: 6527874 (2003-03-01), Li
patent: 0 924 717 (1999-06-01), None
patent: 1 118 601 (2001-07-01), None
patent: 07-109504 (1995-04-01), None
patent: 09-170055 (1997-06-01), None
patent: 11-186016 (1999-07-01), None
patent: 2002-301554 (2002-10-01), None
patent: WO WO99/67187 (1999-12-01), None
patent: WO0218078 (2002-03-01), None

Affiliated with

Also associated with

Rating

Rare earth magnet alloy ingot, manufacturing method for the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rare earth magnet alloy ingot, manufacturing method for the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rare earth magnet alloy ingot, manufacturing method for the... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3572324