Patent ID: 11915845
Assignee: SHIN-ETSU CHEMICAL CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A method for producing rare earth sintered magnet comprising the steps of:
depositing a coating of R-containing particles on at least a portion of a surface of a rare earth magnet body; and
heat treating the magnet body for causing absorption and diffusion of R in the magnet body, R being at least one element selected from rare earth elements, wherein the depositing step relies on an aerosol deposition method in which the R-containing particles are forced to impinge on the rare earth magnet body under the impetus of a differential pressure between an internal pressure of a chamber where the magnet body is held in place and a pressure of a supply for supplying the R-containing particles to the chamber, and
the deposited coating is a porous coating and has a density which is 40 to 70% of the true density of the R-containing particles.