MANUFACTURING METHODS OF A POWDER FOR RARE EARTH MAGNET AND THE RARE EARTH MAGNET BASED ON EVAPORATI

文件类型：PDF文档
文件大小：182K
A manufacturing method of a powder for rare earth magnet and the rare earth magnet based on evaporation treatment, includes the steps of : coarsely crushing an alloy for the rare earth magnet and then finely crushing to obtain a fine powder; and evaporating the fine powder and an evaporation material in vacuum or in inert gas atmosphere; wherein the weight ratio of the evaporation material evaporated to the fine powder and the fine powder is 10-6˜0.05 : 1. By adding the process of evaporation treatment of fine powder before the process of compacting under a magnetic field and after the process of fine crushing, the sintering property of the powder is changed drastically; a magnet with a high coercivity, a high squareness and a high heat resistance is obtained.