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Today's topic: Why should Dysprosium be added to NdFeB magnets?
As we all know, the temperature resistance of NdFeB is relatively poor. In order to improve the coercivity and thus the working temperature of NdFeB, the magnet manufacturer added dysprosium in the formula.
What will be the effect of less dysprosium in powerful neodymium magnet?
To put it simply, if NdFeB lacks neodymium, the remanence may be reduced, that is to say, the magnetism is weak. If there is dysprosium in the high grade permanent magnet, the lack of dysprosium may lead to the reduction of the grade and the coercivity, which can be understood as the reduction of the high temperature resistance characteristics.
The image is a convex magnet with a paired magnetization, Related products are: Nickel Coated Top Hat Shaped Strong Magnets [sales supply]
Guess you also want to know the NdFeb brand metal dysprosium each account for how much?
The dysprosium content added in the M grade NdFeb grade is 0-1%
The dysprosium content of the metal added in the H file NdFeb grade is 0-2%
The dysprosium content of SH file NdFeb grade is 1-4.5%
The content of dysprosium in UH NdFeb grade is 3-6%
The dysprosium content in EH grade NdFeb is 4-10%
The above data for the experience value, not fixed value, for reference only!
Through the above introduction, we can know that Ndfeb strong magnets plus dysprosium is mainly to improve the temperature resistance, the more added, the better the temperature resistance performance.
You are now seeing the specifications of this magnet ring OD 13mm, bore diameter 8mm, thickness of 3.5mm, the surface of the black epoxy, due to the reason of the photo may look like a ferrite, the actual bonded ring magnets, suitable for a variety of types of motor, sensor, and electric appliances....
Neodymium iron boron is divided into sintering, bonding and injection molding according to the different production processes. The general neodymium arc magnet is sintered, also called sintered arc neodymium magnet. Today this product is a bonded arc magnet that is not much used. The difference between sintered arc magnets is that bonded NdFeB magnet tiles require molds to produce....
Courage magnet manufacturers in China specialize in the production of various specifications of NdFeB strong magnetic tiles, large-radian strong magnetic tiles, large-sized arc magnetic tiles, arc-shaped sector magnets, and you are welcome to consult the arc-shaped magnets for quotation and proofing....
You are now browsing this ring for bonded neodymium magnets, gray epoxy on the surface, outer diameter 8mm, diameter of the hole is 4.5mm, height 6mm, it's mainly used in the field of electric motors, if you need other specifications, please consult us....
The sample shows a chemical nickel coated NdFeB small cylindrical magnet with N42 grade of magnetic properties, requires magnet N pole scribe marking, 2mm diameter, 2mm thickness, axial magnetization, the difference with conventional nickel is not obvious from the appearance but it is more suitable for use in wet, acidic or alkaline environments....
This is a small and thin (flat) round countersunk magnet, diameter 8mm, thickness is only 2mm, you see the countersunk hole neodymium magnets are generally about 3mm thick, so it belongs to the thinner countersunk hole magnets, if you want to be thinner it is difficult to process, for the customization of this type of magnets we are very good at,...
N42SH grade radial hollow cylindrical magnet 6.3x3x11mm for high speed motors...
This product is a T-shaped strong magnet, the material is rare earth NdFeB, it is a custom-shaped irregular Nd magnet, the sample is N52 grade, the surface is nickel coated, mainly used for connectors, electronic products, medical equipment, the maximum working temperature It is 80 degrees Celsius. If you need to use it in a high temperature environment, you need to replace the temperature resistant material....