An alnico magnet was discovered in Japan by T. Mishima is a type of permanent magnet where the magnetic material keeps its magnetism even after the removal of magnetic field. It refers to alloys of metals, which is composed of aluminium, Nickel and Cobalt. It is named using the symbols of Aluminium, Nickel and Cobalt. Hence its called as Al-ni-co.They even have resistance to loss of magnetism.
Alnico Bar MagnetsBack to Top
Alnico is an alloy of iron and is made up of aluminium, nickel and cobalt. It is ferromagnetic in nature and possesses with high coercivity. To produce permanent magnets, this type alloys are used. Two mains types are bar magnets and rod magnets. We can identify this material according to their shape.
- They can withstand high temperature even as high as 10000 F.
- They are brittle in nature and have low coercive force as compared to ceramic and rare earth materials.
Alnico Rod MagnetsBack to Top
These Magnets are temperature stable and hence applied for high heating applications and can have same composition.
- They vary from bar magnet in size and can withstand the temperature from 9750F to 10200F.
- They also have the low coercive force.