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A 4-element formula ultra-high bs manganese zinc ferrite material and preparation method

A manganese-zinc ferrite, ultra-high technology, applied in the field of 4-element formula ultra-high Bs manganese-zinc ferrite material and preparation, can solve the problem of high power loss of the magnetic core, to meet performance and cost requirements, low loss, The effect of low material cost

Active Publication Date: 2018-03-09
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its core power loss is very high, which is 4000kw / m 3 , such a high power loss also limits the application of its own high Bs characteristics

Method used

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  • A 4-element formula ultra-high bs manganese zinc ferrite material and preparation method
  • A 4-element formula ultra-high bs manganese zinc ferrite material and preparation method
  • A 4-element formula ultra-high bs manganese zinc ferrite material and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] will consist of 65.5mol% Fe 2 o 3 , 19.3mol% of MnO, 14mol% of ZnO, and 1.2mol% of NiO were mixed in a sand mill for 1 hour. After drying, they were pressed into a round cake with an outer diameter of 100mm under a pressure of 10Mpa, and then dried at 800 Pre-fire at ℃ for 2 to 4 hours. Based on the quality of the powder after calcining, add auxiliary components to the above calcined material, the added auxiliary components (ppm) are: 600ppm of CaCO 3 , 200ppm ZrO 2 , 120ppm WO 3 , 200ppm MoO 3 , 400ppm Nb 2 o 5 . Then carry out secondary sanding for 140 minutes, and dry the secondary sanding slurry for particle size testing. SMD is 0.9-1.1 μm, X50 is 1-1.15 μm, and X90 is less than 3 μm. After adding PVA, carry out spray granulation, and the shape is Φ25* 15*8 standard ring cores are sintered. 600 ℃ ~ 1360 ℃ heating rate 5 ℃ / min, at 1360 ℃ for 6 hours, oxygen concentration 2.5%, according to the equilibrium oxygen concentration for atmosphere protection cool...

Embodiment 2

[0021] The formula is: 63.5mol% Fe 2 o 3 , 16.5 mol% of MnO, 16 mol% of ZnO, 4 mol% of NiO, the manufacturing process, sintering process and test conditions are the same as in Example 1.

Embodiment 3

[0023] The formula is: 61.5mol% Fe 2 o 3 , 14.5 mol% of MnO, 18 mol% of ZnO, 6 mol% of NiO, the manufacturing process, sintering process and test conditions are the same as in Example 1.

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Abstract

The invention discloses a 4-element formula ultra-high Bs manganese zinc ferrite material and a preparation method. It includes the main components of ferric oxide, manganese oxide, zinc oxide and nickel oxide, and the auxiliary components are mainly calcium carbonate and zirconium dioxide, and the auxiliary components include tungsten trioxide, molybdenum trioxide and niobium pentoxide. One or more, the raw materials composed of Fe2O3, MnO, ZnO, NiO are mixed in a sand mill, after drying, they are pressed into a round cake under a pressure of 10Mpa, and then pre-fired; the quality of the powder after pre-burning As a benchmark, add the corresponding amount of auxiliary components for secondary sanding, and dry the secondary sanding slurry for particle size testing; add PVA and spray granulation, and shape it into a standard ring magnetic core for sintering. The beneficial effect of the present invention is that its high Bs characteristic can be fully utilized, and the temperature rise can also be satisfied; at the same time, the material cost is far lower than that of the magnetic powder core material, which can better meet the performance of high-power high-power-density power transformer design and cost requirements.

Description

technical field [0001] The invention relates to the related technical field of soft magnetic ferrite materials, in particular to a 4-element formula ultra-high Bs manganese zinc ferrite material and a preparation method. Background technique [0002] With the continuous miniaturization of electronic products, the corresponding power supply must achieve high power density design. To achieve high power density of the power supply, the miniaturization and flattening of the magnetic core in electronic components is the key. In order to realize the miniaturization and flattening of the magnetic core and the high power density design of the power supply, magnetic materials with high Bs and low loss are required. [0003] In some high-power transformer design fields such as new energy photovoltaic inverters and charging piles, it is necessary to consider both small-volume design and temperature-rise design. The saturation magnetic flux density Bs of conventional power ferrite mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26
Inventor 卢飞翔赵旭顾小建
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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