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AlNiCo Magnets

AlNiCo magnetic material is an alloy of Aluminum-Nickel-Cobalt which possesses an excellent temperature stability and high residual induction. AlNiCo magnets have a low Coercive Force that limits their applications in many cases. Casting and sintering are two major processes used to manufacture the AlNiCo magnets.

Alnico is an acronym regarding a own family of iron alloys which in addition to iron are composed basically of aluminium (Al), nickel (Ni) and cobalt (Co), subsequently al-ni-co. additionally they encompass copper, and on occasion titanium. Alnico alloys are ferromagnetic, with a high coercivity (resistance to loss of magnetism) and are used to make permanent magnets. earlier than the improvement of rare-earth magnets within the Nineteen Seventies, they have been the strongest kind of everlasting magnet. other alternate names for alloys in this own family are: Alni, Alcomax, Hycomax, Columax, and Ticonal.

The composition of alnico alloys is typically eight–12% Al, 15–26% Ni, 5–24% Co, up to six% Cu, up to 1% Ti, and the balance is Fe. The improvement of alnico commenced in 1931, while T. Mishima in Japan discovered that an alloy of iron, nickel, and aluminum had a coercivity of four hundred oersteds (Oe; zero.07957 kA/m), double that of the first-class magnet steels of the time.

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