RARE EARTH PERMANENT MAGNET AND METHOD FOR PRODUCING RARE EARTH PERMANENT MAGNET

文件类型：PDF文档
文件大小：1744K
Provided are : a rare earth permanent magnet which has improved magnetic characteristics of a permanent magnet by having a high density; and a method for producing a rare earth permanent magnet. A compound (12) is formed by grinding a magnet starting material into a magnet powder and mixing the ground magnet powder with a binder. Then, the compound (12) is molded into a sheet on a supporting base (13) by hot melt molding, thereby producing a green sheet (14). After that, the molded green sheet (14) is heated and softened, and magnetic field orientation is carried out by applying a magnetic field to the heated green sheet (14). The green sheet (14) after the magnetic field orientation is calcined in a non-oxidizing atmosphere, and is subsequently sintered at a firing temperature, thereby producing a permanent magnet (1) that has a density of 95% or more.