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High-frequency high-temperature low-loss mnzn power ferrite material and preparation method thereof

A ferrite material and low-loss technology, applied in the field of low-loss ferrite material and preparation, can solve problems such as difficulty in maintaining low loss

Active Publication Date: 2022-06-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0011] The invention provides a high-frequency, high-temperature, low-loss MnZn power ferrite material and a preparation method thereof, which is made by mixing main raw materials and doping additives, and is mainly aimed at high-frequency MnZn power ferrite materials that are difficult to produce at high temperatures. For the technical problem of maintaining low loss, provide a high-frequency, high-temperature, ultra-low-loss MnZn power ferrite material and its preparation method, so as to effectively reduce switching loss, improve energy efficiency, and achieve environmental protection and energy saving effects

Method used

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  • High-frequency high-temperature low-loss mnzn power ferrite material and preparation method thereof

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preparation example Construction

[0063] The preparation method of a high-frequency, high-temperature, low-loss MnZn power ferrite material of the present invention uses MnZn ferrite powder material as a raw material, and includes the following method steps:

[0064] 1) The main raw material is prepared and processed,

[0065] First, the main raw material components of different particle sizes in the above proportions are sieved through 100-200 mesh and then pretreated and mixed to form the main raw material pretreatment material; the pretreatment mixing is to mix the proportioned main raw materials The sieved powder particles of the components are dehumidified, and then mixed for 15-60 minutes at a temperature of 40-90 °C, and the main raw material is pre-treated;

[0066] 2) A primary grinding treatment,

[0067] The main raw material pretreatment material prepared in step 1) is placed in a ball milling device, subjected to initial grinding activation treatment, and drying treatment is carried out to contro...

Embodiment

[0086] Aiming at the technical problem that the existing high-frequency MnZn power ferrite material is difficult to maintain low loss at high temperature, the present invention provides a high-frequency high-temperature ultra-low loss MnZn power ferrite material and a preparation method thereof, which are: using BaTiO 3 (BTO) the same below, particle doping improves the resistivity temperature characteristics of MnZn power ferrite, while refining the grain, and finally suppresses the loss of MnZn power ferrite at high frequency and high temperature. First by preferably high-purity Fe 2 O 3 , Mn 3 O 4 and ZnO as raw materials, Fe 2 O 3 and ZnO content on the performance of high-frequency MnZn power ferrite, and the optimal main formula range was determined. CaCO 3 , V 2 O 5 , Co 2 O 3 , TiO 2 , SnO 2 , BTO, and CaCu 3 Ti 4 O 12 (CCTO) the same below, doping with other additives to control the microstructure and electromagnetic properties of high-frequency MnZn p...

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Abstract

The invention provides a high-frequency, high-temperature, low-loss MnZn power ferrite material and a preparation method thereof, which is made by mixing main raw materials and doping additives, and is mainly aimed at high-frequency MnZn power ferrite materials that are difficult to produce at high temperatures. For the technical problem of maintaining low loss, a high-frequency, high-temperature, ultra-low-loss MnZn power ferrite material and its preparation method are provided, thereby effectively reducing switching loss, improving energy efficiency, and realizing environmental protection and energy saving effects.

Description

Technical field: [0001] The invention relates to a low-loss ferrite material and a preparation method, in particular to a high-frequency, high-temperature, low-loss MnZn power ferrite material and a preparation method thereof. Background technique: [0002] Ferrite material is one of the main raw materials in the switching power supply of power electrical equipment, and its material composition determines the quality of the switching power supply and the effect of energy saving and consumption reduction to a large extent. [0003] Due to its small size, light weight and high efficiency, switching power supplies have gradually replaced traditional linear power supplies and have been widely used in various fields, from civilian communication digital equipment to industrial production and even military electronic equipment. An integral part of electronic equipment. In the switching power supply, the weight and volume of the magnetic material components are very large, accounti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/622
CPCC04B35/2633C04B35/622C04B2235/3263C04B2235/3284C04B2235/3272C04B2235/3208C04B2235/3239C04B2235/3275C04B2235/3232C04B2235/3293C04B2235/3236C04B2235/3234C04B2235/5436C04B2235/5445C04B2235/602C04B2235/656C04B2235/6567
Inventor 余忠王宏吴国华孙科窦海之邬传健兰中文蒋晓娜
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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