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What factors will effect performance of magnet?
Ambient temperature: since sintered NdFeB magnet has negative temperature coefficients of remanence Br and coercivity Hc, the temperature will demagnetize the magnet to some extent, reversibly or irreversibly. The loss is also recoverable or irrecoverable.
Environment humidity: NdFeB magnet usually has to be coated to prevent it from corrosion because the naked material is very easy rusted and oxidated. Dry environment will result a long life of the magnet usage.
Application Of Sintered NdFeB Magnets
Especially suitable for used in various electronic motors, engineering equipment, medical equipment, Health bandages and plasters, audio apparatus, Micro products of Auto, National defence, Security systems, Computer, Biology project, Instrument and Meter, household appliances, Magnetic separators, Magnetic resonance imaging, Specialty door catches, Filters & strainers, Sensors Speakers, Microphone/earphone, High performance motors, Brushless motor, Micromotor / servo motor, VCM(voice coil motor) Automobiles, Magnetic coupling Magnetic Chuck, Magnetic toy, Magnetic tools, Other magnetic applications.
Neodymium magnet grades
Neodymium Magnet (NdFeB magnet), referred to as the “King of Magnets”, has so far the highest commercialized performance. It has quite high magnetic properties, whose BHmax is 10 times higher than Ferrite. It is excellent in mechanical performance, and its operating temperature can reach up to 200 degrees Celsius. With its hard texture, stable performance and superior cost-effectiveness, it is widely used. But due to its strong chemical activity, its surface coating must be disposed. Nowadays, neodymium magnets has got rapid development and wide application. In many fields, it may replace the traditional iron magnet, Al nickel and cobalt alloys and samarium cobalt magnets, such as electric motors, apparatus and instruments, automobile industry, petrochemical industry and magnetic health care products. Various shapes can be produced, such as disc magnet, ring magnet, rectangular magnet, arc magnet, and other forms of magnet.Neodymium magnets exists in some everyday electronic products like hard disc, cellphones, and earphones, etc.
Neodymium magnets are most powerful of any kind of magnetic materials Br of Neodymium magnets are much more than 11,000 Gauss. Therefore, Neodymium magnets have strong holding strength on metal surface and could be used as component for holding, separating, etc.
Neodymium magnets must be carefully handled to avoid personal injury and material damage due to its extremely magnetic strength and brittle property.
