Ceramic(Hard ferrite) magnets were developed in the early 1960 as a low-cost alternative to metallic magnets (steels and alnico), Ceramic magnets are very hard and brittle. Standard tolerances for ceramic magnet dimensions are +/-.005" for ground dimensions and +/- 2% of the size for as sintered dimensions. Because of their brittleness these...

Bonded NdFeB magnets are produced by binding rapid-quenching Nd-Fe-B powders which is mixed with plastic resin to form a magnet by compression molding with epoxy and injection molding with nylon. The injection molding has particularly useful feature in molding very complicated shapes and thin walled parts....