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High-saturation magnetic flux, high-direct current superposition and low-loss soft magnetic material and preparation method thereof

A high DC superposition, soft magnetic material technology, applied in the direction of inorganic material magnetism, can solve problems such as deterioration, and achieve the effect of promoting crystal grains, high Curie temperature, and uniform grain distribution.

Active Publication Date: 2012-11-21
RUYUAN DONGYANGGUANG MAGNETIC MATERIAL
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to improve the working stability of the inductance element under DC superposition, some electromagnetic parameters of the magnetic core must be optimized. However, the optimization of the electromagnetic parameters of the magnetic core often puts contradictory requirements on the physical and chemical crystal phase structure of soft magnetic materials, such as: The physical and chemical crystal phase structure of high Bs is to a large extent the high loss physical and chemical crystal phase structure, and vice versa; therefore, how to optimize one or several of the electromagnetic parameters while simultaneously optimizing rather than degrading other electromagnetic parameters parameter has always been a major and long-term challenge faced by related companies at home and abroad; in other words, in order to further improve the electromagnetic performance of the magnetic core in the above-mentioned various applications, there is still a lot of room for improvement in the combination of electromagnetic parameters of traditional soft magnetic materials

Method used

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  • High-saturation magnetic flux, high-direct current superposition and low-loss soft magnetic material and preparation method thereof
  • High-saturation magnetic flux, high-direct current superposition and low-loss soft magnetic material and preparation method thereof
  • High-saturation magnetic flux, high-direct current superposition and low-loss soft magnetic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh Fe 2 o 3 : 53.8mol%, Mn 3 o 4 (calculated as MnO): 38.2mol%, ZnO: 8.0mol% of the three raw materials, then add an appropriate amount of deionized water to the sand mill for a sand mill for 35 minutes, and add an appropriate amount 10-15 minutes before the end of the sand mill PVA solution, and then carry out a spray granulation;

[0032] Spray granulate the slurry after sanding once, and then put it into the pre-fired furnace for pre-burning. The temperature in the pre-fired furnace is controlled at 830°C, and the pre-fired furnace is kept warm for 3.5 hours;

[0033] Proportioning of the content of sub-components to the pre-burned main component, relative to the total weight of the main component, WO 3 0.04wt%, NiO 0.008wt%, ZrO 2 0.05wt%, CaCO3 (calculated as CaO) is 0.03wt%, Nb 2 o 5 0.05wt%, TiO 2 0.13wt%, CO 2 o 3 0.05wt%, MoO 3 0.01wt%, V 2 o 5 0.05wt%;

[0034] Then put the powder containing the main and auxiliary components into the sand mill...

Embodiment 2

[0038] Weigh Fe 2 o 3 : 54.8mol%, Mn 3 o 4 (calculated as MnO): 40.4mol%, ZnO: 4.8mol% of the three raw materials, then add an appropriate amount of deionized water to the sand mill for a sand mill for 40 minutes, and add an appropriate amount 10-15 minutes before the end of the sand mill PVA solution, and then carry out a spray granulation;

[0039] Spray granulate the slurry after sanding once, and then put it into the pre-fired furnace for pre-burning. The temperature in the pre-fired furnace is controlled at 860°C, and the pre-fired furnace is kept warm for 3 hours;

[0040] For the pre-burned main component and then carry out the ratio of the auxiliary component content, WO 3 0.01wt%, NiO 0.03wt%, ZrO 2 0.02wt%, CaCO 3 (calculated as CaO) is 0.04wt%, Nb 2 o 5 0.02wt%, TiO 2 0.06wt%, C O2 o 3 0.25wt%, MoO 3 0.01wt%, V 2 o 5 0.03wt%;

[0041] Then put the powder containing the main and auxiliary components into the sand mill and add deionized water and defoam...

Embodiment 3

[0045] Weigh Fe 2 o 3 : 54.5mol%, Mn 3 o 4 (calculated as MnO): 39.8mol%, ZnO: 5.7mol% of the three raw materials, then add an appropriate amount of deionized water to the sand mill for a sand mill for 45 minutes, and add an appropriate amount 10-15 minutes before the end of the sand mill PVA solution, and then carry out a spray granulation;

[0046] Spray granulate the slurry after sanding once, and then put it into the pre-fired furnace for pre-burning. The temperature in the pre-fired furnace is controlled at 890 ° C, and the heat preservation of the pre-fired furnace lasts for 2.5 hours;

[0047] For the pre-burned main component and then carry out the ratio of the auxiliary component content, WO 3 0.02wt%, NiO 0.02wt%, ZrO 2 0.04wt%, CaCO 3 (calculated as CaO) is 0.01wt%, Nb 2 o 5 0.04wt%, TiO 2 0.08wt%, C O2 o 3 0.15wt%, MoO 3 0.03wt%, V 2 o 5 0.02wt%;

[0048] Then put the powder containing the main and auxiliary components into a sand mill and add deioni...

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Abstract

The invention relates to a high-saturation magnetic flux, high-direct current superposition and low-loss soft magnetic material and a preparation method thereof. The soft magnetic material comprises the following main components: 53.5 to 55 molar percent of Fe2O3, 4 to 9.5 molar percent of ZnO, and the balance of MnO; and based on the total weight of the main components, the soft magnetic material comprises the following auxiliary components: 0.01 to 0.05 weight percent of WO3, 0.005 to 0.03 weight percent of NiO, and 0.02 to 0.06 weight percent of ZrO2. The soft magnetic material has higher saturation magnetic flux density Bs in a wide temperature range and a larger difference between the saturation magnetic flux density Bs of the soft magnetic material and residual magnetic flux densityBr exists, power consumption is greatly reduced in the wide temperature range particularly, the superposition performance is high, and Curie temperature is relatively high, so that a plurality of electromagnetic parameters are matched more optimally, and the soft magnetic material is particularly suitable for realizing the higher and more stable electrical inductance function on various occasionswith large direct current superposition.

Description

technical field [0001] The invention relates to an electronic device and its preparation. More specifically, the invention relates to a manganese-zinc soft magnetic material and its preparation method. Background technique [0002] In electronic and electrical equipment, a variety of magnetic material products with different quality requirements are widely used, and the reasonable collocation of various electromagnetic parameters can be realized with better cost performance, so as to meet the requirements of different parameters of electronic and electrical equipment with different functions. High-quality magnetic material products have become the goal of research and development in the industry. [0003] In recent years, the amount and grade of frequency conversion air conditioners and frequency converters have been increasing rapidly. The frequency conversion circuits usually include switching power supply circuits that provide power for control circuits and low-voltage ci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/34C04B35/26C04B35/622
Inventor 范仲康张凯傅膑刘培元
Owner RUYUAN DONGYANGGUANG MAGNETIC MATERIAL
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