Advantages and Applications of Sintered AlNiCo Magnets After being discovered by Tokushichi Mishima in 1931, AlNiCo magnets have received a lot of attention. Due to their many advantages, AlNiCo magnets still occupy an important position in the applications of permanent magnets. According to different production processes, ALNICO Magnets can be divided into Sintered AlNiCo Magnets and Cast