Overview
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The main components of AlNiCo are Al, Ni, Co, Fe and AlNiCo magnet is named after the each first letter of the elements. In terms of its manufacturing method, there are cast method and sintered method and it is also distinguished into isotropic and anisotropic. Depending on the manufacturing method, it will have slightly different characteristics but sintered AlNiCo magnet is insignificant in its demand and cast AlNiCo magnet is most widely used.
Characteristics
Cast AlNiCo magnet has the characteristics of its property changing from temperature as in the case with other metals, while also having a high level of hardness. Accordingly, it is processed mostly through grinding and allows efficient work through a compact configuration of magnetic circuit based on convenient magnetizing.
Because of its high magnetic flux density and stable temperature characteristics, it is used for various purposes such as speakers, microphone, motor, ammeter, etc.
Sintered AlNiCo has similar characteristics as cast AlNiCo through which a very small scale and complex shape production is possible based on its high level of magnetic characteristics and excellent mechanical hardness. It is used for elaborate work.
AlNiCo magnet has the advantage of its stability even in high temperatures such as 500-600℃ because of its high Curie temperature but also has the disadvantage of its magnetism gradually weakening over time due to its weak coercive force.
Grade
