Permanent magnet composite and preparing method

A technology of composite materials and inorganic composite materials, which is applied in the field of permanent magnet composite materials and its preparation, can solve the problems of low remanence at high temperature and achieve the effects of low cost, simple process and guaranteed quality

Active Publication Date: 2018-03-13
BAOTOU INST MAGNETIC NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the high temperature remanence of this material is not high

Method used

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Embodiment Construction

[0038] Further elaborate the content of the present invention below in conjunction with accompanying drawing.

[0039] The invention provides a high-coercivity permanent magnet composite material, which is composed of three alloy materials A, B, C and an inorganic composite material D, and the weight ratio of A, B, C and D is 1.2:1:0.1- 0.6:0.01-0.05.

[0040] The weight percent of each component in the alloy material A is: Al 0.6-0.9%, Si 3-5%, Ti 0.01-0.06%, Sc 0.01-0.05%, Hf 0.05-0.09%, B1-1.5% , Nd25 ~ 29%, the rest Fe.

[0041] The weight percentage of each component in the alloy material B is: La15-20%, Sb0.02%-0.05%, Re0.04%-0.07%, Be 0.01%-0.05%, B1.5-2.5%, The remaining Fe.

[0042] The weight percent content of each component in the alloy material C is: 0.1-0.5% of La, 1-2.5% of B1, 3-6% of Al, 8-11% of Si, and the rest is Fe.

[0043] The weight percentage of each component in the inorganic composite material D is: SrO 1-4%, Ce 2 o 3 0.1-0.4%, Co 3 o 4 0.1...

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Abstract

The invention discloses a permanent magnet composite which is composed of three alloy materials A, B and C and an inorganic composite D according to the weight ratio of A to B to C to D being 1.2 to 1to (0.1-0.6) to (0.01-0.05). Through material mixing and press forming, a blank is placed in a sintering furnace to be sintered under the protection of argon, the temperature is first raised to 500-750 DEG C and then kept for 3-4 hours, then the temperature is raised to 1050-1090 DEG C for sintering for 3-4 hours, cooling is conducted to the room temperature, two times of tempering treatment including thermal treatment tempering at 880-900 DEG C and thermal treatment tempering at 530-560 DEG C for 1-2 hours are conducted, and finally aging treatment at 180-220 DEG C is conducted to obtain thepermanent magnet composite.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to a permanent magnetic composite material and a preparation method. Background technique [0002] Permanent magnet materials, also known as "hard magnetic materials", are materials that can maintain constant magnetic properties once magnetized. It has wide hysteresis loop, high coercive force and high remanence. In practice, permanent magnet materials work in the second quadrant demagnetization part of the hysteresis loop after deep magnetic saturation and magnetization. Hard magnetic materials refer to magnetic materials that are magnetized to saturation in an external magnetic field, and can still maintain high remanence and provide a stable magnetic field after the external magnetic field is removed, also called permanent magnetic materials. Taking advantage of this feature, permanent magnet materials are widely used in many industries such as energy, informatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/09H01F1/147H01F1/057H01F1/11C22C38/06C22C38/02C22C38/14C22C38/60
CPCC22C38/002C22C38/005C22C38/02C22C38/06C22C38/14C22C38/60H01F1/0571H01F1/09H01F1/11H01F1/14791
Inventor 蒋晓龙董英华陶昭灵赵浩峰
Owner BAOTOU INST MAGNETIC NEW MATERIALS CO LTD
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