Method for Manufacturing Sintered Magnet and Sintered Magnet

Abstract

A magnet preparation method includes coating powder slurry on at least one of a first surface or a second surface of an NdFEB matrix and carrying out a curing reaction, to obtain a coated magnet, and subjecting the coated magnet to a vacuum heat treatment, a grain boundary diffusion treatment, and an aging treatment. The first surface and the second surface are opposite to each other. The powder slurry includes powder containing heavy rare earth element and UV monomer. The UV monomer includes radical-cured UV monomer. A temperature of the vacuum heat treatment is in a range from 250° C. to 600° C.

Dependencies are inferred from the claim text.