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High performant low consumption manganese zine ferrite material and preparation process thereof

A manganese-zinc ferrite and low power consumption technology, which is applied in the field of high-performance and low-power manganese-zinc ferrite materials and their preparation, can solve the problems of complex process, increased cost, etc., so as to reduce production cost and power consumption. , the effect of improving the performance of the sample

Inactive Publication Date: 2006-06-28
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the patent application No. 200310109415.4 proposes to reduce power consumption by secondary doping. Obviously, the addition of additives will complicate the process and greatly increase the cost

Method used

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  • High performant low consumption manganese zine ferrite material and preparation process thereof
  • High performant low consumption manganese zine ferrite material and preparation process thereof
  • High performant low consumption manganese zine ferrite material and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] using Fe 2 O 3 69.1wt%, Mn 3 O 4 22wt%, ZnO 8.9wt% as the main components, put into a ball mill, mix ball mill for 2 hours according to the ratio of ball:material:water=6:1:1.4, and put it into a 120-degree oven for drying. Take out the dried material and put it into a box furnace for pre-sintering, the pre-sintering temperature is 900°C, and the temperature is kept for 1.5 hours. Weigh the doped oxide CaCO 3 0.08wt%, Nb 2 O 5 0.01wt%, Ta 2 O 5 0.01wt%, Co 2 O 3 0.1 wt% and pre-sintered material are put into a ball mill together with the ball: material: water = 8: 1: 1 and mixed for secondary ball milling, ball milling for 5 hours, and the average particle size after ball milling is 0.7-1.0 μm. After ball milling, oven drying is performed, and 12wt% polyvinyl alcohol solution with a concentration of 7% is added to the dried material for granulation, and sieved through a 60-80 mesh screen. Add 0.3wt% zinc stearate to the granulated material, press and fo...

Embodiment 2

[0036] Using Fe 2 O 3 71wt%, Mn 3 O 4 23wt%, ZnO 6wt% as the main components, put into a ball mill, mix and ball mill for 2 hours according to the ratio of ball:material:water=6:1:1.4, and put it into a 120 degree oven for drying. Take out the drying material, put it into a box-type furnace for pre-burning, the pre-burning temperature is 870°C, and keep warm for 2 hours. Weigh doped oxide CaCO 3 0.08wt%, Nb 2 O 5 0.01wt%, Ta 2 O 5 0.01wt%, Gd 2 O 3 0.08wt% and calcined material are put into a ball mill together and mixed by ball: material: water = 8: 1: 1 and mixed by ball milling for 5 hours. After ball milling, the average particle size is 0.7-1.0 μm. After ball milling, dry in an oven, add 12 wt% polyvinyl alcohol solution with a concentration of 7% to the dried material to granulate, and sieve through a 60-80 mesh screen. Add 0.3wt% zinc stearate to the granulated material, press molding, and the green density is 3.4g / cm 3 , the size of the pressed sample...

Embodiment 3

[0040] Using Fe 2 O 3 72wt%, Mn 3 O 4 23.5wt%, ZnO 4.5wt% as the main components, put into a ball mill, mix and ball mill for 2 hours according to the ratio of ball:material:water=6:1:1.4, and put it into a 120 degree oven for drying. Take out the drying material, put it into a box-type furnace for pre-burning, the pre-burning temperature is 850°C, and keep warm for 3.5 hours. Weigh doped oxide CaCO 3 0.06wt%, Nb 2 O 5 0.008wt%, Ta 2 O 5 0.0085wt%, SnO 2 0.2wt%, Gd 2 O 3 0.08wt% and calcined material are put into a ball mill together and mixed by ball: material: water = 8: 1: 1 and mixed by ball milling for 5 hours. After ball milling, the average particle size is 0.7-1.0 μm. After ball milling, dry in an oven, add 12 wt% polyvinyl alcohol solution with a concentration of 7% to the dried material to granulate, and sieve through a 60-80 mesh screen. Add 0.3wt% zinc stearate to the granulated material, press molding, and the green density is 3.2g / cm 3 , the s...

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Abstract

The invention relates to a high capacity low power consumption manganese-zinc ferrite material manufacturing method. The constituents includes 69.1-72.5wt% Fe2 O3, 22-24wt% Mn3O4, and ZnO. In the process of grinding and sintering, two or more from TiO2, Gd2 O3, SnO2, Co2O3, Ta2O5, Nb2O5, CaCO 3 could be added into the raw material. After grinding, pressure molding, sintering following certain temperature curve, the manganese-zinc ferrite material would be gained. The invention is simple and cost low. It has the feature of wide bandwidth and wide temperature.

Description

technical field [0001] The invention relates to a manganese-zinc ferrite material with high performance and low power consumption and a preparation method thereof. The invention relates to a broadband and wide temperature ferrite magnetic material with saturation magnetic flux density, low coercivity and high Curie temperature, belonging to the technical field of oxide magnetic materials. Background technique [0002] Manganese-zinc ferrite has high initial permeability and high saturation magnetic flux density (B s ), high resistivity, low loss and other advantages, so it is widely used in electronic equipment, such as: broadband pulse transformers, choke coils, noise filters and recording heads. In addition, the transformer core made of manganese-zinc ferrite has also been widely used in the switching power supply of computers, color TVs, video recorders and other electronic equipment. In many departments related to national economy and people's livelihood, such as aeros...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622
Inventor 王维刘公强须栋徐梅顾明蔡英文
Owner SHANGHAI JIAO TONG UNIV
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