Rare Earth Neodymium Grain Boundary Diffusion Magnets

/Rare Earth Neodymium Grain Boundary Diffusion Magnets
  • Rare Earth Neodymium Grain Boundary Diffusion Magnets
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  • Rare Earth Neodymium Grain Boundary Diffusion Magnets, Heavy Rare Earth Elements (HREE) GBD Process NdFeB Magnets, Grain Boundary Diffusion (GBD) Process NdFeB permanent magnets, high-end neodymium magnets China factory

    Rare Earth Neodymium Grain Boundary Diffusion Magnets is an important new advance in Neodymium magnet production technology.

    Heavy Rare Earth Elements (HREE) are delivered directly to critical areas of the magnet’s microstructure. These areas are where HREE are the most effective at increasing the properties of the magnet to withstand high opposing magnetic fields at high temperatures. HREE have been greatly reduced in the Main Phase in favor of Neodymium -conserving these valuable metals and enhancing magnetic strength and Coercivity.

    GBD Technology:

    Conserves rare and valuable HREE Dysprosium and Terbium in Neodymium magnets
    Creates new magnet grades with higher Br and Hcj (and BH Max) that were previously unattainable with traditional technology
    Together with enhanced microstructural technologies of Grain Modification and Grain Refinement-
    Enhances supply chain stability
    Grain Boundary Diffusion (GBD) increases the Coercivity of Neodymium magnets while conserving the Remanence (Br) due to the unique grain structure of Neodymium magnets.

    GBD Process NdFeB Magnet – The Way to Deal with Rising Price of Rare Earth
    The application fields for NdFeB rare earth magnets range from simple holding solution for daily supplies up to high-end applications for the aerospace industry. China Magnets Company – MPCO MAGNETICS can produce permanent neodymium magnets for different applications. Meanwhile, we provide customized service. You can consult us according to your application requirements.

    There are many different NdFeB materials (such as grade N35, N45, N50, N50M, N48H, N42SH…) for different application fields. According to the ratio of material composition, the temperature resistance, magnetic properties and other parameters can be adapted to achieve the best results for the desired application.

    Besides disc neodymium magnets for packaging products, countersunk NdFeB magnet for golf tools, pot magnet for mounting, we also focus on the application of high technical standards:


    Traditional Technology vs Grain Boundary Diffusion

    Using traditional technology, demand for HREE is expected to continue to increase, so technical solutions have been investigated for reducing or eliminating the demand for HREE in Neodymium magnets.

    Grain Boundary Diffusion has been under investigation and development for a number of years. It is now entering mass production at MPCO and is a successful method of drastically reducing the use of HREE while still achieving Coercivity requirements.

    When GBD is used synergistically with traditional metallurgical practices like grain refinement and grain modification, magnetic properties can be increased while using cheaper and more plentiful metals.

    GBD is employed along with other metallurgical methods. Some of these methods have been effective at eliminating the use of Dysprosium and Terbium for certain grades of Neodymium magnets and reducing the need for these HREE’s in other grades. GBD Process NdFeB Magnets

    Summary: GBD offers the following improvements to NdFeB magnets:

    GBD creates a major reduction in the amount of HREE’s Dysprosium and Terbium in NdFeB magnets.
    The exact amount of reduction depends on a number of factors. The reduction percentage generally ranges from 70-100%.
    GBD concentrates HREE in metallurgical phases of the magnet where it is most effective
    GBD gives materials engineers the opportunity to increase the maximum energy product to levels not possible with traditional technology.
    GBD allows a magnet increased Coercivity while simultaneously maintaining high Remanence –a feature that is impossible with traditional technology.
    New grades of magnets can be made with GBD that were previously unimaginable through conventional metallurgy

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