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德语High Temperature Resistant Smco Magnets are strong magnets designed to withstand very high temperatures, making them perfect for applications involving hybrid and electric vehicle traction motors, industrial motors, magnetic clutches/brakes as well as aerospace/military/medical equipment as they have exceptional temperature stability and strength. SmCo Magnets are rare earth magnets; thus their price may differ significantly due to limited availability of Samarium and Cobalt elements comprising this magnet type.
Powder metallurgy (sintering) is the preferred way of manufacturing samarium cobalt magnets, as this involves compacting fine powdered samarium and cobalt particles under heat and pressure to create complex shapes with uniform magnetization across a wide temperature range. Powder metallurgy also offers numerous other advantages when producing these magnets, including creating complex shapes while maintaining uniform magnetization throughout its production process.
Other methods for producing samarium cobalt magnets include injection molding and compression bonding, but sintering is the preferred choice as it provides better performance at higher temperatures while remaining cost effective compared with alternative manufacturing techniques for samarium cobalt magnets.
SmCo magnets come in various grades to meet the requirements of specific applications. While these magnets tend to be weaker at room temperature than neodymium magnets, they feature very high working temperatures and superior resistance to demagnetization - as well as exceptional temperature characteristics with minimal output changes across a broad temperature spectrum - making them suitable for high temperature motor and sensor applications.
One key to the high-temperature resilience of samarium cobalt magnets lies in their chemical composition: this alloy contains very little iron, making it immune from corrosion while having higher magnetic energy density than many other magnets. Furthermore, its thermal conductivity makes heat dissipation more efficient.
Samarium cobalt magnets must be properly insulated to remain effective at high temperatures. Insulation materials include ceramics, steel and copper. In some instances a nickel coating may also be applied to protect their magnetic core from oxidation and corrosion.
Smco magnets boast an extremely negative temperature coefficient, enabling them to maintain magnetic properties even at extreme temperatures. This is made possible thanks to the inclusion of gadolinium in their alloy composition, which reduces negative temperature coefficient and allows reversibility at much higher operating temperatures than would be the case without this modification.
Samarium cobalt magnets boast excellent reversible working temperatures; however, extended exposure to temperatures above their maximum working temperatures will result in demagnetization that varies in severity depending on duration and temperature exposure; should it reach its highest instantaneous temperature for too long, permanent weakness can result regardless of heating and cooling cycles used during exposure. Therefore, proper planning must be applied when designing high temperature magnets for specific uses and applications.
High temperature resistant magnet
