AlNiCo permanent magnet 10/4

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Permanent magnets have become indispensable in today’s technology-focused world. The many different magnetic materials and their manifold characteristics have firmly established permanent magnets as important elements in countless application fields. In addition to the proven materials ferrite and AlNiCo, modern magnets are also made from rare earth materials such as neodymium-iron-boron and samarium-cobalt. Even small magnets made from these materials offer strong magnetic force and thereby cater to the growing demand for smaller and stronger magnets. Permanent magnets also play a key role in the growing field of automation technology, where it is essential to continue the development of drives, actuators and sensors. A particular leap in the direction of future technologies was the discovery of the new materials samarium-cobalt and neodymium-iron-boron. Some of the particularly suitable applications are products that can only function with permanent magnets, including e-bikes, electric drives in the automotive sector and hybrid cars. Permanent magnets made from AlNiCo are frequently used in applications that require a resistance to high temperatures of up to 500 °C (930 °F). They are metallic permanent magnets on the basis of an aluminum-nickel-cobalt alloy. Additional metals such as iron, copper or titanium are sometimes added to the alloy. The great magnetic stability when exposed to temperatures, the temperature coefficient and a high remanence make this easily magnetizable material an interesting option for different applications. However, one has to take into account that the low coercive field strength of AlNiCo magnets makes them easily demagnetizable.