NdFeB magnet demagnetization problems at high temperature

- Nov 22, 2017 -

The problem of high temperature demagnetization of neodymium-iron-boron magnets is what we all know from the combination of the cost and performance of neodymium-iron-boron magnets, making them popular choices for the use of traditional magnets and the creation of new product applications where the current strength is dramatically increased , Allows the use of a smaller magnet, which favors most designs.


Neodymium iron boron magnets at high temperatures need to be careful handling procedures, because NdFeB magnets at high temperatures easily demagnetization. Below we will work with you to understand the problem of high temperature demagnetization of NdFeB magnets. Due to the high content of neodymium iron in neodymium-iron-boron magnets, they are also easily oxidized, so various coatings that satisfy these conditions depend on the operating environment of the neodymium-iron-boron magnets.


Standard configuration: In general, NdFeB magnet is divided into two main columns list: CD and block.


The strength of these magnets needs to be handled with care, small magnets attract, from far away and large magnets that can cause pain and can even break when damaged.


Disc Cylinders New, known as "Discs," are generally marked by a height magnet with a diameter first cylinder, usually a tall cylinder diameter. The new line is called Rectangular or Square with a variety of cross-section thickness options, rare earth samarium cobalt neodymium boron (neodymium iron boron) is an alternative to samarium cobalt magnets can withstand higher temperatures, more corrosion-resistant, and neodymium Iron boron comparable. Samarium Cobalt than NdFeB, the market price sensitivity is more expensive. Samarium cobalt is used in computer disk drives, sensors, traveling wave tubes, linear actuators, satellite systems and some motors.


Common applications:

Satellite system

Linear actuator

Computer optical drive


Car (temporary stability is crucial).

Article from NdFeB Industry Network

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