Introduction to AlNiCo permanent magnet materials

Before the invention of rare earth permanent magnet materials in the 1970s, AlNiCo alloys had always been the permanent magnet materials with the strongest magnetic properties. However, because the composition contained strategic metals cobalt and nickel, the cost was high. With the ferrite permanent magnets and With the advent of rare earth permanent magnets, AlNiCo materials have been gradually replaced in many applications. However, in some high-temperature applications and situations with high magnetic stability requirements, AlNiCo magnets still occupy an unshakable position.

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