Sintered magnetic composite material and preparation method thereof

A magnetic composite material, hybrid sintering technology, applied in the field of composite materials, can solve problems such as low residual magnetism and complicated production methods, and achieve excellent magnetic properties, low raw material cost, and easy industrial production

Inactive Publication Date: 2018-07-27
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production method is complex and the remanence is not high

Method used

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  • Sintered magnetic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A sintered magnetic composite material, which is made by mixing and sintering material A, material B, material C and copper alloy D; the weight ratio of material A, material B, material C and copper alloy D is 0.05:1.3:0.003: 0.05. among them:

[0029] The weight percentage content of each component in material A is: C 0.18%, Mn 0.40%, Sn 0.30%, S 0.02%, P 0.02%, Nd 2%, Os 0.08%, Er 0.05%, and the rest Fe.

[0030] The weight percentage of each component in material B is: B 2%, Nd 27%, Os 0.8%, Sb 3%, Er0.05%, S 0.8%, and the rest Fe.

[0031] The weight percentage of each component in material C is: Al 2 O 3 21%, ZrO 2 3%, ZnO 0.3%, BaO 3%, MnO 5%, Yb 2 O 3 3%, Fe 2 O 3 0.5%, TiO 2 1%, Er 2 O 3 0.02%, K 2 O 0.5%, B 2 O 3 3%, the rest SiO 2 .

[0032] The weight percentages of the components in the copper alloy D are: P 0.10%, Sn 5.0%, Pb 0.01%, Nd 0.4%, Er 0.05%, and copper balance.

[0033] The preparation method of sintered magnetic composite material includes the fol...

Embodiment 2

[0045] In this embodiment, except that the raw material ratios of the sintered magnetic composite material of material A, material B, material C and copper alloy D are different, the rest and the preparation method are the same as the embodiment 1.

[0046] In this embodiment, the raw material ratio of the sintered magnetic composite material is: 0.05:1.1:0.005:0.07

[0047] The weight percentage of each component in material A is: C 0.23%, Mn 0.60%, Sn 0.4%, S 0.04%, P 0.03%, Nd 5%, Os 0.1%, Er 0.07%, and the rest Fe;

[0048] The weight percentage of each component in material B is: B 3%, Nd 30%, Os 0.1%, Sb 4%, Er 0.07%, S0.1%, and the rest Fe;

[0049] The weight percentage of each component in material C is: Al 2 O 3 23%, ZrO 2 5%, ZnO 0.4%, BaO 4%, MnO7%, Yb 2 O 3 5%, Fe 2 O 3 0.7%, TiO 2 2%, Er 2 O 3 0.03%, K 2 O 0.7%, B 2 O 3 4%, the rest SiO 2 ;

[0050] The weight percentages of the components in the copper alloy D are: P 0.2%, Sn 6%, Pb 0.02%, Nd 0.6%, Er 0.07%, and co...

Embodiment 3

[0053] In this embodiment, except that the raw material ratios of the sintered magnetic composite material of material A, material B, material C and copper alloy D are different, the rest and the preparation method are the same as the embodiment 1.

[0054] In this embodiment, the raw material ratio of the sintered magnetic composite material is: 0.05:1: 0.008: 0.09.

[0055] The weight percentage of each component in material A is: C 0.28%, Mn 0.70%, Sn 0.5%, S 0.05%, P 0.045%, Nd 7%, Os 0.12%, Er 0.09%, and the rest Fe;

[0056] The weight percentage of each component in material B is: B 5%, Nd 32%, Os 1.2%, Sb 5%, Er 0.09%, S1.3%, and the rest Fe;

[0057] The weight percentage of each component in material C is: Al 2 O 3 25%, ZrO 2 8%, ZnO 0.5%, BaO 5%, MnO9%, Yb 2 O 3 6%, Fe 2 O 3 0.9%, TiO 2 3%, Er 2 O 3 0.05%, K 2 O 0.8%, B 2 O 3 5%, the rest SiO 2 ;

[0058] The weight percentages of the components in the copper alloy D are: P 0.25%, Sn 7.0%, Pb 0.03%, Nd 0.8%, Er 0.09%, ...

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Abstract

The invention discloses a sintered magnetic composite material and a preparation method thereof. The magnetic composite material is prepared by mixing and sintering a material A, a material B, a material C and a copper alloy D, and the weight ratio of the material A, the material B, the material C to the copper alloy D is 0.05:(1-1.3):(0.003-0.008):(0.05-0.09). The sintered magnetic composite material is simple and convenient in preparation technology and simple in process, raw materials for preparation are low in cost, the produced alloy has good performance, industrial production is facilitated, and the prepared permanent magnet material is applicable to electrical equipment industry.

Description

Technical field [0001] The invention relates to the technical field of composite materials, in particular to a sintered magnetic composite material and a preparation method thereof. Background technique [0002] Chinese patent document CN107424703A discloses a grain boundary diffusion method for making sintered neodymium iron boron permanent magnets with heavy rare earth adhesion technology. The magnet is made of sintered neodymium iron boron and one side of a pure iron sheet is adsorbed to form a suction tooling. The suction tooling respectively compresses and adsorbs a prescribed amount of heavy rare earth elemental powder on the two attachment end surfaces of the workpiece to be attached. The adhesion process can not only ensure the realization of the magnetic properties of the product, but also does not need to add more production and inspection equipment, and does not need to add new complex processes and process methods, so that the neodymium iron boron production plant can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/09C22C33/02
CPCH01F1/09C22C33/0278
Inventor 李庆芳董英华蒋晓龙赵浩峰
Owner NANJING UNIV OF INFORMATION SCI & TECH
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