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High-frequency low-loss tantalum-doped manganese zinc ferrite material and preparation method thereof
The invention relates to a high-frequency low-loss tantalum-doped manganese zinc ferrite material and preparation thereof. The tantalum-doped manganese zinc ferrite material comprises main materials and a doping material, wherein the main materials comprise iron oxide, manganese oxide and zinc oxide, the mass ratio of the iron oxide to the manganese oxide to the zinc oxide is (70-71): (21-22): (7-8), and the doping material comprises tantalum. The preparation method comprises the following steps of S1, adding the main material into a ball mill for ball milling to obtain a mixture A, S2, pre-sintering the mixture A, and then cooling to room temperature to obtain a pre-sintered material B, S3, adding the pre-sintered material B and a doping material into a ball mill for secondary ball milling, and then drying to obtain a mixture C, S4, adding a polyvinyl alcohol solution into the mixture C, mixing, performing spray granulation, and sieving to obtain powder particles, S5, putting the powder particles into a mold to be pressed and formed, and acquiring a blank, and S6, sintering the blank in an equilibrium atmosphere. Compared with the prior art, the material composition is uniformly distributed, the grain boundary resistivity is high, and the loss of the product under the MHz-level frequency is further reduced.
本发明涉及一种高频低损耗的钽掺杂锰锌铁氧体材料及其制备，钽掺杂锰锌铁氧体材料包括主料和掺杂料，主料包括氧化铁、氧化锰和氧化锌，氧化铁、氧化锰和氧化锌的质量比为(70～71):(21～22):(7～8)，掺杂料包括钽。制备为：S1：将主料加入球磨机进行球磨，得到混合料A；S2：将混合料A进行预烧，然后冷却至室温得到预烧料B；S3：将预烧料B和掺杂料加入球磨机进行二次球磨，后烘干得到混合料C；S4：向混合料C中加入聚乙烯醇溶液混合进行喷雾造粒，后过筛得到粉末颗粒；S5：将粉末颗粒放入模具，压制成型，得到坯件；S6：将坯件在平衡气氛下进行烧结。与现有技术相比，本发明的材料成分均匀分布，晶界电阻率高，产品在MHz级的频率下的损耗进一步降低。
High-frequency low-loss tantalum-doped manganese zinc ferrite material and preparation method thereof
The invention relates to a high-frequency low-loss tantalum-doped manganese zinc ferrite material and preparation thereof. The tantalum-doped manganese zinc ferrite material comprises main materials and a doping material, wherein the main materials comprise iron oxide, manganese oxide and zinc oxide, the mass ratio of the iron oxide to the manganese oxide to the zinc oxide is (70-71): (21-22): (7-8), and the doping material comprises tantalum. The preparation method comprises the following steps of S1, adding the main material into a ball mill for ball milling to obtain a mixture A, S2, pre-sintering the mixture A, and then cooling to room temperature to obtain a pre-sintered material B, S3, adding the pre-sintered material B and a doping material into a ball mill for secondary ball milling, and then drying to obtain a mixture C, S4, adding a polyvinyl alcohol solution into the mixture C, mixing, performing spray granulation, and sieving to obtain powder particles, S5, putting the powder particles into a mold to be pressed and formed, and acquiring a blank, and S6, sintering the blank in an equilibrium atmosphere. Compared with the prior art, the material composition is uniformly distributed, the grain boundary resistivity is high, and the loss of the product under the MHz-level frequency is further reduced.
本发明涉及一种高频低损耗的钽掺杂锰锌铁氧体材料及其制备，钽掺杂锰锌铁氧体材料包括主料和掺杂料，主料包括氧化铁、氧化锰和氧化锌，氧化铁、氧化锰和氧化锌的质量比为(70～71):(21～22):(7～8)，掺杂料包括钽。制备为：S1：将主料加入球磨机进行球磨，得到混合料A；S2：将混合料A进行预烧，然后冷却至室温得到预烧料B；S3：将预烧料B和掺杂料加入球磨机进行二次球磨，后烘干得到混合料C；S4：向混合料C中加入聚乙烯醇溶液混合进行喷雾造粒，后过筛得到粉末颗粒；S5：将粉末颗粒放入模具，压制成型，得到坯件；S6：将坯件在平衡气氛下进行烧结。与现有技术相比，本发明的材料成分均匀分布，晶界电阻率高，产品在MHz级的频率下的损耗进一步降低。
High-frequency low-loss tantalum-doped manganese zinc ferrite material and preparation method thereof
一种高频低损耗的钽掺杂锰锌铁氧体材料及其制备方法
JIANG HAOJIE (author) / YAN PENGFEI (author) / YAN BIAO (author)
2021-06-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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