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Ultrahigh saturation flux density manganese-zinc ferrite material and preparation method thereof

A manganese-zinc ferrite and magnetic flux density technology, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problem of low saturation magnetic flux density and achieve the effect of optimizing the sintering process

Pending Publication Date: 2020-04-21
TDG HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional materials are mainly concentrated below 500kHz, and the saturation magnetic flux density is low, it is difficult to meet the development needs of modern technology

Method used

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  • Ultrahigh saturation flux density manganese-zinc ferrite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: A manganese-zinc ferrite material with an ultra-high saturation magnetic flux density is composed of a main component and an auxiliary component, and the main component is Fe 2 o 3 :55.25mol%, ZnO: 3.2mol%, Co 2 o 3 : 0.20mol%, the rest is MnO; secondary component Nb 2 o 5 :0.02wt%, CaCO 3 :0.05wt%, NiO:0.02wt%, V 2 o 5 :0.02wt%, SiO 2 : 0.008wt%, TiO 2 :0.01wt%, Ta 2 o 5 : 0.02wt%, the above secondary components are based on Fe 2 o 3 , ZnO, MnO and Co 2 o 3 The total weight percentage is calculated.

[0016] A preparation method for producing the high-frequency, wide-temperature, low-loss, ultra-high saturation magnetic flux density manganese-zinc ferrite material described in Example 1, comprising the steps of:

[0017] 1) Ingredients: According to the main formula Fe 2 o 3 , ZnO, Co 2 o 3 , MnO ratio was weighed and mixed sanding, sanding time is 15min;

[0018] 2) Pre-burning: Pre-burn the mixed powder at 900°C and keep it warm for...

Embodiment 2

[0023] Example 2: A manganese-zinc ferrite material with an ultra-high saturation magnetic flux density, which is composed of a main component and an auxiliary component, and the main component is Fe respectively 2 o 3 :55.5mol%, ZnO: 3.5mol%, Co 2 o 3 : 0.15mol%, the rest is MnO; secondary component Nb 2 o 5 :0.04wt%, CaCO 3 :0.05wt%, NiO:0.03wt%, V 2 o 5 :0.03wt%, SiO 2 : 0.01wt%, TiO 2 :0.03wt%, Ta 2 o 5 : 0.01wt%, the above secondary components are based on Fe 2 o 3 , ZnO, MnO and Co 2 o 3 The total weight percentage is calculated.

[0024] A preparation method for making the ultrahigh saturation magnetic flux density MnZn ferrite material described in Example 2, comprising the steps of:

[0025] 1) Ingredients: According to the main formula Fe 2 o 3 , ZnO, Co 2 o 3 , MnO ratio to weigh and mix sanding, sanding time is 25min;

[0026] 2) Pre-burning: pre-burn the mixed powder, the pre-burning temperature is 1000 ℃, keep warm for 2 hours;

[0027] 3) S...

Embodiment 3

[0031] Embodiment 3: A manganese-zinc ferrite material with an ultra-high saturation magnetic flux density is composed of a main component and an auxiliary component, and the main component is Fe respectively 2 o 3 :56.2mol%, ZnO: 2.5mol%, Co 2 o 3 : 0.10mol%, the rest is MnO; secondary component Nb 2 o 5 :0.01wt%, NiO:0.05wt%, CaCO3 :0.08wt%, V 2 o 5 :0.01wt%, SiO 2 0.005wt%, TiO 2 :0.05wt%, Ta 2 o 5 : 0.02wt%, the above secondary components are based on Fe 2 o 3 , ZnO, MnO and Co 2 o 3 The total weight percentage is calculated.

[0032] A method for preparing the ultra-high saturation magnetic flux density manganese-zinc ferrite material described in Example 3, comprising the steps of:

[0033] 1) Ingredients: According to the main formula Fe 2 o 3 , ZnO, Co 2 o 3 , MnO ratio was weighed and mixed sanding, sanding time is 15min;

[0034] 2) Pre-burning: Pre-burn the mixed powder at 1050°C for 2 hours;

[0035] 3) Sanding: add the additives to the calcine...

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Abstract

The invention discloses an ultrahigh saturation magnetic flux density manganese-zinc ferrite material, which is composed of a main component and an auxiliary component. The main component is composedof 55.25-56.25 mol% of Fe2O3, 2.5-3.5 mol% of ZnO, 0.10-0.20 mol% of Co2O3 and the balance of MnO in terms of oxide; and the auxiliary component includes 0.01-0.06 wt% of Nb2O5, 0.05-0.15 wt% of CaCO3, 0-0.05 wt% of NiO, 0.01-0.04 wt% of V2O5, 0-0.01 wt% of SiO2, 0-0.05 wt% of TiO2 and 0-0.05 wt% of Ta2O5. The manganese-zinc ferrite material prepared by the invention has the power consumption of less than 250kW / m<3> at the temperature of 25 DEG C and 100 DEG C under 3MHz and 30mT, and the saturation flux density at the temperature of 100 DEG C reaches 460 mT or above, so that the manganese-zinc ferrite material adapts to the requirements of a high-frequency transformer and a server inductor.

Description

technical field [0001] The invention relates to a manganese-zinc ferrite material and a preparation method thereof, in particular to an ultra-high saturation magnetic flux density manganese-zinc ferrite material and a preparation method thereof. Background technique [0002] As an important part of modern electronic equipment, switching power supply is widely used in various fields of industrial, civil and military electronic equipment. The miniaturization of electronic products requires switching power supply to be small in size, light in weight and high in reliability. The volume and weight of its core component, the main transformer, occupy a major part of the switching power supply. According to the working principle of the transformer, the output voltage is proportional to the frequency (V=KfBmAN), K is the form factor, Bm is the working magnetic induction intensity, and f is the switching frequency. A is the cross-sectional area of ​​the magnetic core, N is the number ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26H01F1/34C04B35/622
CPCC04B35/2633C04B35/265C04B35/622C04B2235/3232C04B2235/3239C04B2235/3251C04B2235/3262C04B2235/3275C04B2235/3279C04B2235/3284C04B2235/658H01F1/344
Inventor 张强原邢冰冰缪思敏宋岩岩焦帅帅张志新李小龙
Owner TDG HLDG CO LTD
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