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High-frequency high-saturation-flux-density ferrite, preparation method, inductor and transformer

A technology of magnetic flux density and ferrite, which is used in the manufacture of inductors/transformers/magnets, transformer/inductor components, circuits, etc. The effect of improving the superposition characteristics, reducing the volume, and reducing the total loss of the product

Active Publication Date: 2019-11-12
海宁瑞思科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0027] In summary, due to the limitation of the performance of soft magnetic materials, the transformers in the prior art are large in size and cannot meet the miniaturization requirements of devices.

Method used

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  • High-frequency high-saturation-flux-density ferrite, preparation method, inductor and transformer
  • High-frequency high-saturation-flux-density ferrite, preparation method, inductor and transformer

Examples

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Comparison scheme
Effect test

Embodiment 1

[0062] A method for preparing a high-frequency ultra-high saturation magnetic flux density manganese-zinc ferrite material and an inductor. The ferrite material is composed of a main component and an auxiliary component, and the main component is Fe 2 o 3 : 55.0mol%, ZnO: 3.2mol%, balance MnO; secondary component Nb 2 o 5 : 0.02wt%, CaCO 3 : 0.03wt%, V 2 o 5 : 0.02wt%, TiO 2 : 0.01wt%, Ta 2 o 5 :0.01wt%, Co 2 o 3 : 0.15wt%, the above sub-components are based on Fe 2 o 3 , ZnO, the total weight percentage of MnO is calculated.

[0063] A preparation method of a high-frequency ultra-high saturation magnetic flux density manganese-zinc ferrite material comprises the following steps:

[0064] 1) Ingredients: According to the main formula Fe 2 o 3 , ZnO and MnO ratios were weighed and mixed for sanding, and the sanding time was 15 minutes;

[0065] 2) Pre-burning: pre-burn the mixed powder, the pre-burning temperature is 900°C, and keep warm for 2 hours;

[0066] 3)...

Embodiment 2

[0074] A method for preparing a high-frequency ultra-high saturation magnetic flux density manganese-zinc ferrite material and an inductor. The ferrite material is composed of a main component and an auxiliary component, and the main component is Fe 2 o 3 : 55.5mol%, ZnO: 2.8mol%, MnO 41.7mol%; secondary component Nb 2 o 5 : 0.02wt%, CaCO 3 : 0.05wt%, V 2 o 5 : 0.03wt%, TiO 2 : 0.01wt%, Ta 2 o 5 :0.01wt%, Co 2 o 3 : 0.15wt%, the above sub-components are based on Fe 2 o 3 , ZnO, the total weight percentage of MnO is calculated.

[0075] A preparation method of a high-frequency ultra-high saturation magnetic flux density manganese-zinc ferrite material comprises the following steps:

[0076] 1) Ingredients: According to the main formula Fe 2 o 3 , ZnO and MnO ratios were weighed and mixed for sanding, and the sanding time was 15 minutes;

[0077] 2) Pre-burning: pre-burn the mixed powder, the pre-burning temperature is 900°C, and keep warm for 2 hours;

[0078] 3...

Embodiment 3

[0086] A method for preparing a high-frequency ultra-high saturation magnetic flux density manganese-zinc ferrite material and an inductor. The ferrite material is composed of a main component and an auxiliary component, and the main component is Fe 2 o 3 : 55.0mol%, ZnO: 3.2mol%, balance MnO; secondary component Nb 2 o 5 : 0.02wt%, CaCO 3 : 0.03wt%, V 2 o 5 : 0.02wt%, TiO 2 : 0.01wt%, Ta 2 o 5 :0.01wt%, Co 2 o 3 : 0.15wt%, the above sub-components are based on Fe 2 o 3 , ZnO, the total weight percentage of MnO is calculated.

[0087] A preparation method of a high-frequency ultra-high saturation magnetic flux density manganese-zinc ferrite material comprises the following steps:

[0088] 1) Ingredients: According to the main formula Fe 2 o 3 , ZnO and MnO ratios were weighed and mixed for sanding, and the sanding time was 15 minutes;

[0089] 2) Pre-burning: pre-burn the mixed powder, the pre-burning temperature is 900°C, and keep warm for 2 hours;

[0090] 3)...

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Abstract

The invention discloses a high-frequency high-saturation-flux-density ferrite, a preparation method, an inductor and a transformer. The ferrite contains main components and auxiliary components in parts by mole: the main components contain 55-57 mol% of Fe2O3, 0-3.5 mol% of ZnO, and the balance MnO; the auxiliary components contain 0.01-0.03 wt% of Nb2O5, 0.02-0.10 wt% of CaCO3, 0.01-0.04 wt% of V2O5, 0-0.01 wt% of SiO2, 0-0.05 wt% of Ta2O5, 0-0.05 wt% of TiO2 and 0.10-0.25 wt% of Co2O3. The ferrite provided by the invention has high saturation magnetic flux density and can be suitable for inductors and transformers. Moreover, the inductor prepared from the high-frequency ultrahigh-saturation magnetic flux density manganese-zinc ferrite material has the advantages of small size and is capable of meeting the requirement for miniaturization of devices.

Description

technical field [0001] The invention relates to the technical field of manganese-zinc ferrite materials, in particular to a ferrite with high frequency and high saturation magnetic flux density, a preparation method, an inductor and a transformer. Background technique [0002] Inductors are a representative passive component that constructs electronic circuits together with resistors and capacitors to remove noise. Inductors are combined with capacitors using electromagnetic properties to construct a resonance circuit or a filter circuit, etc. that amplify a signal in a specific frequency band. [0003] With the development of power supply technology, magnetic components such as inductors are developing in the direction of miniaturization and high power density. This puts forward higher performance requirements for the application of its key components and soft ferrite materials. [0004] In the prior art, if in order to meet the miniaturization of devices, the frequency o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/36H01F27/255H01F41/02
CPCH01F1/36H01F27/255H01F41/0246H01F41/0266
Inventor 李锦炎张强源王志敏金潇锋孙蒋平黄锋邢冰冰李小龙
Owner 海宁瑞思科技有限公司
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