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CN-122000162-A - Manganese zinc ferrite material and preparation method and application thereof

CN122000162ACN 122000162 ACN122000162 ACN 122000162ACN-122000162-A

Abstract

The invention discloses a manganese zinc ferrite material, a preparation method and application thereof. The manganese-zinc ferrite material comprises a main component and an auxiliary component, wherein the main component consists of Fe 2 O 3 , znO and Mn 3 O 4 , and the auxiliary component consists of CaO-SiO 2 -SnO 2 composite, co 2 O 3 and Nb 2 O 5 -MoO 3 composite. The manganese-zinc ferrite material has the advantages of no more than 8% of initial permeability change rate within the temperature range of-40 ℃ to 150 ℃, excellent temperature stability, suitability for the field of automobiles with high stability requirements, simplicity and easiness in operation, easiness in obtaining equipment, low energy consumption, low cost and the like, and is suitable for large-scale industrial production and application.

Inventors

  • DUAN QINGWA
  • YAN CHUANJUN
  • WU XINHUA
  • LI CHENGHONG
  • HOU FEI

Assignees

  • 广东泛瑞新材料股份有限公司

Dates

Publication Date
20260508
Application Date
20260211

Claims (10)

  1. 1. The manganese-zinc ferrite material is characterized by comprising a main component and an auxiliary component, wherein the main component comprises the following components in percentage by mass: Fe 2 O 3 :68.5%~71.5%; ZnO:9%~12%: mn 3 O 4 , the balance; the auxiliary components comprise the following components in percentage by mass: 0.05% -0.35% of CaO-SiO 2 -SnO 2 compound; Co 2 O 3 :0.1%~0.3%; 0.05% -0.3% of Nb 2 O 5 -MoO 3 compound.
  2. 2. The manganese-zinc-ferrite material according to claim 1, wherein the molar ratio of CaO to SiO 2 、SnO 2 in the CaO-SiO 2 -SnO 2 composite is 1:1.8-2.3:1.4-1.7.
  3. 3. The manganese-zinc-ferrite material according to claim 1 or 2, wherein the molar ratio of Nb 2 O 5 、MoO 3 in the Nb 2 O 5 -MoO 3 composite is 1:0.4-0.6.
  4. 4. A method for preparing the manganese-zinc-ferrite material according to any one of claims 1 to 3, comprising the steps of: 1) Mixing Fe 2 O 3 , znO and Mn 3 O 4 , performing wet ball milling, and performing spray granulation and presintering to obtain a main raw material; 2) Mixing the main raw materials, the CaO-SiO 2 -SnO 2 compound, the Co 2 O 3 and the Nb 2 O 5 -MoO 3 compound, performing wet ball milling, performing spray granulation, and performing compression molding and sintering to obtain the manganese-zinc ferrite material.
  5. 5. The preparation method of the ceramic powder, which is characterized by comprising the steps of 1) performing wet ball milling for 30-60 min, 1) performing wet ball milling to obtain slurry with a D 50 particle size of 0.8-1.2 μm, and 1) performing spray granulation to obtain particles with a particle size of 48-380 μm.
  6. 6. The method according to claim 4 or 5, wherein the pre-sintering in step 1) comprises the steps of controlling the temperature rising rate to be 1-6 ℃ per minute, rising the temperature from room temperature to 790-1050 ℃ and keeping the temperature for 2-4 hours.
  7. 7. The preparation method of the ceramic powder, according to claim 4, wherein the wet ball milling time is 50-100 min in the step 2), the D 50 particle size of slurry prepared by the wet ball milling in the step 2) is 0.75-1.3 μm, the particle size of particles obtained by spray granulation in the step 2) is 58-180 μm, and the density of a blank obtained by press molding in the step 2) is 3.0g/cm 3 ～3.3g/cm 3 .
  8. 8. The method according to claim 4 or 7, wherein the sintering in the step 2) comprises the operation of controlling the temperature rise rate to be 1-6 ℃ per minute, heating from room temperature to 1265-1295 ℃ and preserving heat for 3-5 hours.
  9. 9. An electronic component comprising the manganese-zinc-ferrite material according to any one of claims 1 to 3.
  10. 10. An automobile comprising the electronic component according to claim 9.

Description

Manganese zinc ferrite material and preparation method and application thereof Technical Field The invention relates to the technical field of soft magnetic materials, in particular to a manganese zinc ferrite material and a preparation method and application thereof. Background With the rapid development of the automobile (especially new energy automobiles) industry, the functions of automobiles are more and more abundant. As is well known, the application environment of electronic components in automobiles is much more severe than consumer electronics or industrial electronics, and the application environment temperature range can reach-40 ℃ to 150 ℃, so that the requirements on the temperature stability of the electronic components are extremely high. The Mn-Zn ferrite material is an essential key basic material for realizing high-efficiency conversion and management of electric energy of new energy automobiles, is mainly applied to a core three-electric system and a part of electronic control units, and plays an extremely important role. However, the initial permeability (mu i) change rate of the existing manganese zinc ferrite material in the temperature range of-40 ℃ to 150 ℃ is up to more than 30%, so that the problems of signal transmission delay, partial functional disorder and the like can occur when a new energy automobile faces extremely high temperature/extremely low temperature, the actual use experience of the new energy automobile can be seriously influenced, and larger potential safety hazards can exist, so that the ever-increasing actual application requirements cannot be completely met. Therefore, the development of the Mn-Zn ferrite material with high permeability and temperature stability has very important significance. The statements above merely provide background information related to the present disclosure and may not necessarily constitute prior art. Disclosure of Invention The invention aims to provide a manganese zinc ferrite material, and a preparation method and application thereof. The technical scheme adopted by the invention is as follows: The manganese-zinc ferrite material comprises a main component and an auxiliary component, wherein the main component comprises, by mass, 0.05% -0.35% of CaO-SiO 2-SnO2 composite and 0.05% -0.3% of Co 2O3：0.1%～0.3%;Nb2O5-MoO3 composite, and the balance of Fe 2O3：68.5%～71.5%;ZnO：9%～12%：Mn3O4. Preferably, the mol ratio of CaO to SiO 2、SnO2 in the CaO-SiO 2-SnO2 compound is 1:1.8-2.3:1.4-1.7. Preferably, the molar ratio of Nb 2O5、MoO3 in the Nb 2O5-MoO3 compound is 1:0.4-0.6. The preparation method of the manganese-zinc ferrite material comprises the following steps: 1) Mixing Fe 2O3, znO and Mn 3O4, performing wet ball milling, and performing spray granulation and presintering to obtain a main raw material; 2) Mixing the main raw materials, the CaO-SiO 2-SnO2 compound, the Co 2O3 and the Nb 2O5-MoO3 compound, performing wet ball milling, performing spray granulation, and performing compression molding and sintering to obtain the manganese-zinc ferrite material. Preferably, the wet ball milling time in the step 1) is 30-60 min. Preferably, the D 50 particle size of the slurry prepared by the wet ball milling in the step 1) is 0.8-1.2 μm. Preferably, the particle size of the particles obtained by spray granulation in the step 1) is 48-380 μm. Preferably, the presintering in the step 1) comprises the following operation of controlling the temperature rising rate to be 1-6 ℃ per minute, rising the temperature from room temperature to 790-1050 ℃ and preserving the heat for 2-4 hours. Preferably, the wet ball milling time in the step 2) is 50-100 min. Preferably, the D 50 particle size of the slurry prepared by the wet ball milling in the step 2) is 0.75-1.3 mu m. Preferably, the particle size of the particles obtained by spray granulation in the step 2) is 58-180 μm. Preferably, the density of the green body obtained by the press molding in the step 2) is 3.0g/cm 3～3.3g/cm3. Preferably, the sintering in the step 2) comprises the following operation of controlling the temperature rising rate to be 1-6 ℃ per minute, rising the temperature from room temperature to 1265-1295 ℃ and preserving the heat for 3-5 hours. An electronic component comprising the manganese zinc ferrite material described above. An automobile comprising the above electronic component. The manganese zinc ferrite material has the advantages that the initial magnetic permeability change rate of the manganese zinc ferrite material in the temperature range of-40 ℃ to 150 ℃ is not more than 8%, the temperature stability is very excellent, the manganese zinc ferrite material is suitable for the automobile field with high stability requirements, and the preparation method has the advantages of simplicity in operation, simplicity and easiness in equipment, low energy consumption, low cost and the like, and is suitable for large-scale industrial production and application. Specifically