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Iron-based spheroidized micro-nano magnetic powder core and preparation method thereof

A magnetic powder core, micro-nano technology, applied in the direction of magnetic core manufacturing, inductor/transformer/magnet manufacturing, magnetic materials, etc., can solve the problems of difficult to increase effective density, low tonnage of magnetic powder core, poor insulation, etc., to achieve effective density increase, Improve the pressing tonnage and reduce the effect of secondary embrittlement

Inactive Publication Date: 2019-12-13
广东咏旺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology has problems such as poor insulation of iron-based amorphous / nanocrystalline magnetic powders, low tonnage of pressed magnetic powder cores, and difficulty in increasing effective density.

Method used

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  • Iron-based spheroidized micro-nano magnetic powder core and preparation method thereof
  • Iron-based spheroidized micro-nano magnetic powder core and preparation method thereof
  • Iron-based spheroidized micro-nano magnetic powder core and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the preparation process of the quenched strip is as follows:

[0031] 101: Alloy composition design, based on the atomic size difference of iron-based amorphous components, mixing enthalpy, component diversification and addition, fine-tuning the influence of elements on the microstructure and macroscopic magnetic properties as design criteria, but determined that Fe is 83.5wt% , Si is 8.6wt%, B is 1.75wt%, Nb is 4.0wt%, Mo is 1.0wt%, Cu is 1.0wt%, Ni is 0.15wt%;

[0032] 102: According to the designed alloy composition, the selected raw materials are electrical pure titanium, industrial silicon, ferro-niobium, ferro-molybdenum, ferro-boron, electrolytic copper and electrolytic nickel, and the weight master alloy material is 200kg;

[0033]103: Place the raw materials, put electrical pure titanium, industrial silicon, ferro-niobium, ferro-molybdenum, ferro-boron, electrolytic copper and electrolytic nickel, and counterweight master alloy mater...

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Abstract

The invention discloses an iron-based spheroidized micro-nano magnetic powder core and a preparation method thereof. The iron-based spheroidized micro-nano magnetic powder core is prepared from the following raw material components in percentage by weight: 83.2 to 84.8 wt% of iron, 8.3 to 8.9 wt% of silicon, 1.55 to 1.95 wt% of boron, 3.9 to 4.1 wt% of niobium, 0.9 to 1.1 wt% of molybdenum, 0.13 to 0.17 wt% of nickel and 0.95 to 1.05 wt% of copper. The corresponding preparation method comprises the following steps of: 1) preparing a quenched strip, 2) strip heat treatment, 3) ball-milling to prepare magnetic powder, 4) carrying out plasma spheroidizing treatment, and 5) integrally molding and pressing the spheroidized magnetic powder into a magnetic powder core. The iron-based micro-nano magnetic powder subjected to plasma spheroidizing treatment is mostly of a spherical structure, copper wire breakage in the pressing process cannot be caused, the pressing tonnage (65 T is increased to100 T) of the integrally-formed magnetic powder core can be improved, the effective density is increased by about 5 to 10%, and the comprehensive magnetic performance parameters are remarkably improved; the surface layer is formed by secondary remelting, metallurgical strength and plasticity are achieved, and secondary embrittlement in the pressing process of the integrally-formed magnetic powdercore can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of soft magnetic functional materials, in particular to an iron-based spheroidized micro-nano magnetic powder core and a method for preparing the iron-based spheroidized micro-nano magnetic powder core. Background technique [0002] In recent years, with the rapid development and vigorous rise of electronics, communications, artificial intelligence, smart cities and rail transit technologies, various electronic-related functional materials are undergoing tremendous changes, brought about by the combination of new technologies and new materials Innovation supports the comprehensive development of the field. Among them, magnetic materials, as an indispensable class of materials for magnetic and electric fields, are also developing and changing, and their new material composition, preparation technology and application design are also facing unprecedented development opportunities, especially with the developme...

Claims

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Application Information

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IPC IPC(8): H01F1/153H01F41/02
CPCH01F1/1535H01F1/15383H01F41/0206H01F41/0246
Inventor 周林郑立宝陈炽祥唐俊祥
Owner 广东咏旺新材料科技有限公司
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