Corrosion-resistant rare earth element magnet

Details Corrosion-resistant rare earth element magnet Corrosion-resistant rare earth element magnet

2007-01-02

2007-01-02

Sheehan, John P. (Department: 1742)

Metal treatment

Stock

Magnetic

C428S403000

Reexamination Certificate

active

10495968

ABSTRACT:
A corrosion resistant rare earth magnet is characterized by comprising a rare earth permanent magnet represented by R-T-M-B wherein R is at least one rare earth element inclusive of Y, T is Fe or Fe and Co, M is at least one element selected from among Ti, Nb, Al, V, Mn, Sn, Ca, Mg, Pb, Sb, Zn, Si, Zr, Cr, Ni, Cu, Ga, Mo, W, and Ta, the contents of the respective elements are 5 wt %≦R≦40 wt %, 50 wt %≦T≦90 wt %, 0 wt %≦M≦8 wt %, and 0.2 wt %≦B≦8 wt %, and a coating on a surface of the permanent magnet comprising a silicone resin, a flake metal fine powder, and a complexing agent.

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