Abstract
High-energy compression-molded bonded magnets, composed of anisotropic Nd-Fe-B powder, epoxy resin and lubricant with low melting point, were developed. The influence of the lubricant on the magnetic properties, the degree of magnetic orientation and the mechanical strength of bonded magnets were investigated. The results show that the frictional force between powders is decreased by using a lubricant with low melting point. Bonded magnets made by this method have a powder volume fraction and degreee of magenetic orientation of 78Åì and 95Åì, respectively. The mechanical damage of the magnetic powder in compounding and compression process is suppressed by using the lubricant with low melting point. Bonded magnets with a high mechanical strength can be obtained by improvement in the compounding process.
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