Research article: A spark-plasma-sintering approach to the manufacture of anisotropic Nd-Fe-B permanent magnets. The research article addresses issues associated with the production of Nd-Fe-B permanent magnets. The shape of the magnet is limited to simple geometrical forms when the conventional sintering techniques are applied. This approach limits the desing freedom of electrical motors and generators and hinders the development of advanced energy-conversion technologies. The authors proposed a contemporary sintering technique, based on fast consolidation of a powder compact by means of electrical current, as an alternative solution for the manufacture of complex-shaped magnets.
https://www.sciencedirect.com/science/article/pii/S0304885319335887