The working temperatures, plating and coatings, assemblies and circuits, magnetic orientations, applications, packaging, magnetic degradation with time are essential to determine the strength of magnetic materials. Permanent magnets retain their magnetic property with time, but at some point the overuse might deteriorate the performance of the magnet.
Ceramic or ferrite magnets are made of iron oxide compound and barium carbonate (BaCO3) or strontium carbonate (SrCO3).This is the cheapest material that is used to make permanent magnets and is created through the process of sintering and pressing. These are brittle and hard, so diamond wheels are utilised to shape and grind them. It has magnetic properties in all directions.
Magnets made of aluminium alloys are known as alnico. The main components are Aluminium (Al), Nickel (Ni) and Cobalt (Co), along with other elements. These have a stable temperature, corrosion resistant, mechanically strong, but are prone to shock related demagnetization. These are manufactured by casting and sintering methods.
Rare Earth Magnets are made of Lanthanide group of chemical elements. Samarium (Sm) and Neodymium (Nd)are the main components of rare earth permanent magnets. They are available in bonded and sintered forms, commercially Neodymium-Iron-Boron(Nd2Fe14B) and Samarium Cobalt (Sm Co5, Sm2Co17)
Polymer based magnets can be manufactured by mixing rare earth magnets, alnico and ceramic magnets with different polymers.To achieve material flexibility, these magnets are mixed with polymers; they infuse enhanced control over the shape, complexity of shape and direction of the magnetic fields.
Summing up everything, permanent magnets are essential for us, across industries and they render unimaginable support to us. Get the best deal in the market, by learning about them from this quick information narrated above.
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