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Preparation method of medium-broadband wide-temperature low-loss MnZn ferrite material
The invention relates to a medium-broadband MnZn ferrite material with wide-temperature and low-loss characteristics and a preparation method of the medium-broadband MnZn ferrite material. The ferritematerial is composed of Fe2O3, MnO and ZnO as main components and auxiliary components of an additive, and the molar percentages of the main components comprise 52.5-53.5 mol% of Fe2O3, 8.8-9.8 mol%of ZnO and the balance being MnO; based on the total weight of the main components, the additive comprises the auxiliary components: 0.04-0.06% of CaCO3, 0.02-0.03% of Nb2O5, 0.35-0.45% of Co2O3, 0.01-0.03% of ZrO2 and 30-120 ppm of SiO2, wherein the Si element is added in the form of nano-scale gas atomization SiO2. Secondary ball milling and liquid medium settling sorting are carried out on a pre-sintered material, and granulation, pressure molding, sintering under atmosphere/temperature control conditions and other processes are are carried out to prepare the medium-broadband MnZn ferrite material with wide-temperature and low-loss characteristics. The ferrite material has the advantages of compact microstructure, uniform crystal grains, low power loss within a wide temperature range of0-140 DEG C under the working frequency of 100-500 kHz, high saturation flux density and high magnetic conductivity.
本发明涉及一种具有宽温低损耗特性的中宽频MnZn铁氧体材料及其制备方法。以Fe2O3、MnO和ZnO为主要成分及添加剂辅助成分组成，主成分摩尔百分比：Fe2O3为52.5～53.5mol％，ZnO为8.8～9.8mol％，MnO为余量；按占主成分总重量计，其添加剂辅助成分各组分含量为：CaCO3为0.04～0.06％，Nb2O5为0.02～0.03％，Co2O3为0.35～0.45％，ZrO2为0.01～0.03％，SiO2为30~120ppm，其中Si元素以纳米级的气雾化SiO2形式进行添加。预烧料经二次球磨与液体介质沉降分选，以及通过造粒、压力成型与气氛/温度控制条件下的烧结等过程，制备得到具有宽温低损耗特性的中宽频MnZn铁氧体材料。其微结构致密、晶粒均匀，0~140℃的宽温范围内，100~500KHz的工作频率下具有较低的功率损耗，同时具备较高的饱和磁通密度和较高的磁导率。
Preparation method of medium-broadband wide-temperature low-loss MnZn ferrite material
The invention relates to a medium-broadband MnZn ferrite material with wide-temperature and low-loss characteristics and a preparation method of the medium-broadband MnZn ferrite material. The ferritematerial is composed of Fe2O3, MnO and ZnO as main components and auxiliary components of an additive, and the molar percentages of the main components comprise 52.5-53.5 mol% of Fe2O3, 8.8-9.8 mol%of ZnO and the balance being MnO; based on the total weight of the main components, the additive comprises the auxiliary components: 0.04-0.06% of CaCO3, 0.02-0.03% of Nb2O5, 0.35-0.45% of Co2O3, 0.01-0.03% of ZrO2 and 30-120 ppm of SiO2, wherein the Si element is added in the form of nano-scale gas atomization SiO2. Secondary ball milling and liquid medium settling sorting are carried out on a pre-sintered material, and granulation, pressure molding, sintering under atmosphere/temperature control conditions and other processes are are carried out to prepare the medium-broadband MnZn ferrite material with wide-temperature and low-loss characteristics. The ferrite material has the advantages of compact microstructure, uniform crystal grains, low power loss within a wide temperature range of0-140 DEG C under the working frequency of 100-500 kHz, high saturation flux density and high magnetic conductivity.
本发明涉及一种具有宽温低损耗特性的中宽频MnZn铁氧体材料及其制备方法。以Fe2O3、MnO和ZnO为主要成分及添加剂辅助成分组成，主成分摩尔百分比：Fe2O3为52.5～53.5mol％，ZnO为8.8～9.8mol％，MnO为余量；按占主成分总重量计，其添加剂辅助成分各组分含量为：CaCO3为0.04～0.06％，Nb2O5为0.02～0.03％，Co2O3为0.35～0.45％，ZrO2为0.01～0.03％，SiO2为30~120ppm，其中Si元素以纳米级的气雾化SiO2形式进行添加。预烧料经二次球磨与液体介质沉降分选，以及通过造粒、压力成型与气氛/温度控制条件下的烧结等过程，制备得到具有宽温低损耗特性的中宽频MnZn铁氧体材料。其微结构致密、晶粒均匀，0~140℃的宽温范围内，100~500KHz的工作频率下具有较低的功率损耗，同时具备较高的饱和磁通密度和较高的磁导率。
Preparation method of medium-broadband wide-temperature low-loss MnZn ferrite material
一种中宽频宽温低损耗MnZn铁氧体材料制备方法
HUANG YANFENG (author) / XING BINGBING (author) / ZHANG QIANGYUAN (author) / WANG HONGJIAN (author) / JIANG KAICONG (author) / XIA MINGYANG (author) / LI XIAOLONG (author)
2021-03-30
Patent
Electronic Resource
Chinese
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