SINTERED MAGNET, MOTOR, AUTOMOBILE, AND METHOD FOR PRODUCING SINTERED MAGNET

文件类型：PDF文档
文件大小：1782K
Provided is a sintered magnet with outstanding residual flux density and coercivity. The sintered magnet is provided with a group of crystal grains (2) for an R-T-B rare earth magnet having a core (4), and a shell (6) that covers the core (4). The percentage of the mass of heavy rare earth elements in the shell (6) is higher than the percentage of the mass of heavy rare earth elements in the core (4), and the thickest portion of the shell (6) in the crystal grains (2) faces a grain boundary triple point (1). A lattice defect (3) is formed between the core (4) and the shell (6).