Investigation of the relationship between the consistence and microstructure of sintered Nd-Fe-B magnets

One of the most important factors that lower the consistence is the appearance of regions where the technological parameters deviate from the points where the sensors are located. In this paper this was investigated on the basis of the relationship between the intrinsic coercivity and the microstructure parameters of sintered Nd-Fe-B magnets. It is found that the magnet with a fairly good microstructure will have higher consistence than the magnet with a relatively poor microstructure under the same technological conditions. This indicates that the more effective approach to enhance the consistence of a magnet is to optimize its microstructure other than to rigorously enforce the technological conditions. The results obtained show some directive for improving the consistence of the magnetic properties of sintered Nd-Fe-B magnets.