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Nickel-zinc ferrite material, and preparation method and use thereof

A nickel-zinc ferrite and oxide technology, applied in the field of nickel-zinc ferrite materials, can solve the problems of large changes in magnetic permeability and low Curie temperature

Active Publication Date: 2019-10-22
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention is mainly aimed at the existing problems of low magnet strength, large change in magnetic permeability and low Curie temperature after loading current, etc., and provides an existing process for mass production by improving the composition, manufacturing process and sintering process. High magnetic permeability and high strength nickel-zinc ferrite material

Method used

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  • Nickel-zinc ferrite material, and preparation method and use thereof
  • Nickel-zinc ferrite material, and preparation method and use thereof
  • Nickel-zinc ferrite material, and preparation method and use thereof

Examples

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Effect test

Embodiment 1

[0101] A kind of preparation method of nickel-zinc ferrite material comprises the following steps

[0102] (1) 65.2wt% Fe 2 o 3 , 20.5wt% ZnO, 6.8wt% NiO, 7.2wt% CuO, 0.3wt% MnO and water were added to the sand mill for a sand mill for 40min, spray granulation;

[0103] (2) Pre-burn the product obtained by granulation in a rotary kiln pre-calcination furnace at 900°C for 4h, the feed rate of the pre-calcination is 250kg / h, and add the pre-calcined product, additives and water into the sand mill Carry out secondary sand grinding, the time is 120min, the feed rate of described secondary sand grinding is 233kg / h, the particle diameter X50 that described secondary sand grinding obtains product is 1.2 μ m, and X99 is 3 μ m, then add n-octanol , defoamer and PVA are sprayed and granulated to obtain granules, the particle size of the product after granulation is 100 μm, and the content of each component in the additive is added according to the total mass ratio of the main componen...

Embodiment 2

[0106] The difference with Example 1 is that the content of each main component described in step (1) is: 65.4wt% Fe 2 o 3 , 20.1wt% ZnO, 7wt% NiO, 7.3wt% CuO, 0.2wt% MnO.

Embodiment 3

[0108] The difference with Example 1 is that the content of each main component described in step (1) is: 65wt% Fe 2 o 3 , 20wt% ZnO, 7wt% NiO, 7.5wt% CuO, 0.5wt% MnO.

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Abstract

The invention discloses a nickel-zinc ferrite material, and a preparation method and a use thereof. The nickel-zinc ferrite material comprises a main component and an additive, and the main componentcomprises Fe2O3, ZnO, NiO, CuO and MnO; and the additive comprises a group IVA oxide, a group IIA oxide, a group VIB oxide, a group IIIB oxide, a group VA oxide and a group IVB oxide. Formula development and trace element modification in the invention overcome the contradiction that improvement of the strength of a magnetic core reduces the high temperature shock resistance or improvement of the thermal shock resistance lowers the strength of the magnetic core, and the high-performance soft ferrite material with a high magnetic permeability, a high Bs value, a high strength and a high thermalshock resistance and for SMD power inductors is developed.

Description

technical field [0001] The invention belongs to the technical field of soft magnetic ferrite, and in particular relates to a nickel-zinc ferrite material, a preparation method and application thereof. Background technique [0002] Soft magnetic materials are mainly nickel-zinc and nickel-zinc ferrite, which are important electronic functional materials. Due to the characteristics of high magnetic permeability, high resistivity, and high frequency of use, nickel-zinc ferrite is widely used in computers, communications, and consumer electronics. [0003] Nowadays, electronic products are developing in the direction of flat, thin and surface mount, and the size of soft magnetic components is getting smaller and smaller. At the same time, the manufacturing process of SMD power inductors has adopted automatic assembly line production, especially the spot welding process, which has a great impact on the strength of the magnetic core and thermal shock resistance. Performance requi...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622
CPCC04B35/265C04B35/622C04B2235/3208C04B2235/3225C04B2235/3256C04B2235/3262C04B2235/3279C04B2235/3281C04B2235/3284C04B2235/3293C04B2235/3298C04B2235/3418
Inventor 朱晓丽陈军林蒋玉梅
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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