Processing of neodymium-iron-boron alloys by rapid solidification technology
Rapid solidification technology offers outstanding prospects for new cost effective engineering materials with superior properties. The rapid solidification technology process has been applied to the processing of different neodymium—iron—boron alloys to prepare permanent magnets. The materials thus processed have high and low coercivities with differing temperature coefficients for use in varied applications. One of the main advantages of preparing magnets by rapid solidification processing as compared to sintering is that the magnets can be ground without degradation in magnetic properties. The ground powder thus obtained is anisotropic and can be used for a wide variety of applications by injection and compression molding. Energy products of 15–17 MGOe have been achieved by compression molding techniques and energy product of 20 MGOe is possible using this powder.
