Alnico magnets are the most powerful permanent magnets in contemporary magnets. Its BHmax value is 5-12 times that of ferrite magnets, its coercive force is 5-10 times that of ferrite magnets, its potential magnetic properties are very high, and it can absorb energy 640 times its own weight.
Since the main raw material iron of AlNiCo magnets is very cheap, and its own resource storage capacity is relatively large, its price is also much lower than that of samarium cobalt magnets. AlNiCo magnets have better mechanical properties and are easier to cut, drill, and machine complex shapes. The disadvantage of AlNiCo magnets is that the temperature performance is poor, and the magnetic loss is large at high temperature, so it needs to work in a low temperature environment. The temperature is generally around 80 degrees Celsius. Specially treated magnets can withstand temperatures up to 200 degrees Celsius. Since the material contains a lot of neodymium and iron, corrosion is also its weakness. Therefore, AlNiCo magnets must be coated. It can be electroplated with nickel (nickel), zinc (zinc), gold (gold), chromium (chromium), epoxy (epoxy), etc.
AlNiCo magnets are widely used in industry, aerospace, electronics, electromechanical, instrumentation, medical and other fields. There are more and more applications in non-technical fields, such as adsorption magnets, toys, jewelry, etc. At present, many manufacturers prefer to choose equipment with such magnets when introducing magnetic field equipment, because such equipment is not only cheaper, but also has better performance in use.
In addition, magnets like this can generate a relatively strong electromagnetic field, supplying magnetic force while simultaneously attracting ferromagnetic chemicals such as iron, nickel, cobalt and other metals. , constant magnetic fields for generator sets, telephones, speakers, televisions and microwave heating components, but also commonly used in tape recorders, pickups and speakers. It is also used in the magnetic core of various electronic products such as instrument panels, radar detection, communications, navigation bars, monitoring, etc., and is widely used. The composition of AlNiCo magnets is iron, cobalt, nickel and other atoms. Atoms have relatively unique internal structures and have their own magnetic moments. Magnets can generate electromagnetic fields and have the property to attract ferromagnetic chemicals such as iron, nickel, cobalt and other metals.
Classification of AlNiCo magnets:
AlNiCo magnets are classified by shape: they can be divided into lattice magnets, tile magnets, special-shaped magnets, cylindrical magnets, circular magnets, disc magnets, magnetic ring magnets and magnetic frame magnets
AlNiCo magnets are divided into permanent magnets and magnetic tiles. Permanent magnets are combined with strong magnets to modulate the angular momentum of magnetic chemicals and the momentum of electronic devices, and tiles are combined with electricity. (This is also a way to increase magnetism) As aluminum, nickel and cobalt are removed by charge and discharge, the magnetism is gradually lost.