ferroalnico
Ferroalnico, commonly called alnico magnets, refers to a family of permanent magnets based on iron with aluminum, nickel, and cobalt, sometimes with copper and titanium. The name comes from the principal alloying elements—aluminum, nickel, cobalt—and these magnets have long been valued for their temperature stability and corrosion resistance.
Composition and microstructure: The alloys are engineered with iron as the base and additions of aluminum,
Manufacturing: Cast Alnico magnets are produced by pouring the molten alloy into molds and, for anisotropic
Properties: Alnico magnets offer high remanence and good coercivity with exceptional temperature stability and resistance to
Grades and forms: Common grades include Alnico 2, 5, and 8, with different Ni, Co, and Al
Applications: Used in loudspeakers, guitar pickups, sensors, and certain motors and magnetic assemblies where thermal stability