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Magnetic material of containing praseodymium

A magnetic material and soft magnetic phase technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of difficult to obtain, difficult to obtain neodymium, high cost, etc.

Inactive Publication Date: 2005-11-16
SPIN TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the rare earth element in the bonded magnet with better magnetic properties is still mainly neodymium (Nd) in its composition RFeB, but neodymium is not easy to obtain, so the existing neodymium iron boron (NdFeB) permanent magnet is not only in There is a lack of low-temperature characteristics, and this kind of magnet material is limited by the difficulty of obtaining neodymium, and its cost is high
[0006] Signed here, the present invention aims at the above-mentioned various problems, and proposes a high-performance and easy-to-magnetize magnetic powder composition design to effectively overcome the material shortage of known bonded magnets

Method used

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  • Magnetic material of containing praseodymium
  • Magnetic material of containing praseodymium
  • Magnetic material of containing praseodymium

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Embodiment Construction

[0020] The present invention uses the higher anisotropy field Pr 2 Fe 14 B replaces Nd 2 Fe 14 B, to increase the intrinsic coercivity of the magnetic alloy ribbon at room temperature or low temperature ( i H c ) And squareness. When designing the composition, the present invention first uses the PrFeB ternary alloy to obtain the composition of high-performance and easy-to-magnetize magnetic powder, and then uses Nd as a small amount of substitution for Pr to increase the overall saturation magnetization of the alloy ribbon, and then By changing a series of process parameters to optimize the microstructure, the exchange coupling between the soft and hard magnetic phases is improved, thereby increasing the residual magnetization, the magnetic energy product and providing suitable coercivity.

[0021] The composition of the praseodymium-containing magnetic material of the present invention can be determined by atomic percentage (PrNd) x T 100-x-y-z X y Q z The composition formula of...

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Abstract

Containing praseodymium (Pr) element, magnetic material composed of PrFeB ternary alloy as main component and other ones in proper proportions possesses magnetic capabilities of high quantity of residual magnetization. The disclosed magnetic material in high capabilities shows economic benefit of low cost and fine magnetic characteristic in low temperature, since rare earth material of praseodymium is easy to be obtained and in lower cost related to rare earth material of neodymium (Nd). Nd is utilized to replace Pr in trace amount in order to raise quantity of residual magnetization. Moreover, multiple flame resisting elements are added to the magnetic material to improve microscopic structure of alloy sheet band, and enhance magnetic capabilities further.

Description

Technical field [0001] The present invention relates to a magnetic material, in particular to a composition containing praseodymium magnetic material. Background technique [0002] Since the ternary neodymium iron boron (NdFeB) permanent magnet was developed in 1983, its magnetic properties are undoubtedly representative of the current permanent magnet. Its application in the field of bonded magnets (Bonded Magnet) is also increasing, and it is the main force of commercial mass production today; and the new generation of materials uses iron-rich and boron-rich neodymium iron Boron compound dual-phase exchange coupling composite nanocrystalline magnetic powder mainly, namely α-Fe / R 2 Fe 14 B and Fe 3 B / R 2 Fe 14 B-type composite nanocrystalline magnetic powder, where R is a rare earth element, and neodymium (Nd) is commonly used. This composite nanocrystalline magnetic powder uses soft magnetic phase α-Fe or Fe 3 B provides high saturation magnetization and hard magnetic phase R 2...

Claims

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Application Information

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IPC IPC(8): H01F1/053
Inventor 张文成张晃暐
Owner SPIN TECH
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