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High-resistivity power type MnZn ferrite material and preparation method thereof
The invention provides a high-resistivity power type MnZn ferrite material and a preparation method thereof, and relates to the technical field of ferrite materials. The invention relates to a high-resistivity power type MnZn ferrite material, which is prepared from the following raw materials in percentage by mass: 50 to 60 mol percent of ferric oxide, 30 to 40 mol percent of manganese oxide, 5 to 10 mol percent of manganese oxide, 0.008 to 0.06 weight percent of calcium carbonate, 0.01 to 0.05 weight percent of niobium pentoxide, 0.01 to 0.05 weight percent of tin oxide, 0.01 to 0.08 weight percent of zirconium dioxide, 0.01 to 0.03 weight percent of vanadium pentoxide, 0.01 to 0.05 weight percent of titanium dioxide, 0.01 to 0.05 weight percent of bismuth oxide, 0.01 to 0.03 weight percent of copper oxide, 0.01 to 0.03 weight percent of silicon dioxide and the balance of zinc oxide. A mixture of calcium carbonate and silicon dioxide in ferrite powder is concentrated on a grain boundary during high-temperature sintering to form a high-resistivity barrier layer, and the components are combined and doped on the basis of optimizing a sintering process, so that the grain boundary resistivity is further improved, the power loss is reduced, and the magnetic permeability is improved; the comprehensive performance of the ferrite is improved.
本发明提供一种高电阻率功率型的MnZn铁氧体材料及其制备方法，涉及铁氧体材料技术领域。一种高电阻率功率型的MnZn铁氧体材料，包括以下质量百分比的原料：氧化铁50～60mol％、氧化锰30～40mol％、氧化锰5～10mol％、碳酸钙0.008～0.06wt％、五氧化二铌0.01～0.05wt％、氧化锡0.01～0.05wt％、二氧化锆0.01～0.08wt％、五氧化二钒0.01～0.03wt％、二氧化钛0.01～0.05wt％、氧化铋0.01～0.05wt％、氧化铜0.01～0.03wt％、二氧化硅0.01～0.03wt％，通过铁氧体粉料中的碳酸钙和二氧化硅混合物在高温烧结时将集中在晶粒边界上，而形成高电阻率的阻挡层，同时优化结烧工艺为基础同时配合上述配料进行组合掺杂，进一步提高晶界电阻率、降低功率损耗以及提高导磁率的效果，使得铁氧体的综合性能得到提升。
High-resistivity power type MnZn ferrite material and preparation method thereof
The invention provides a high-resistivity power type MnZn ferrite material and a preparation method thereof, and relates to the technical field of ferrite materials. The invention relates to a high-resistivity power type MnZn ferrite material, which is prepared from the following raw materials in percentage by mass: 50 to 60 mol percent of ferric oxide, 30 to 40 mol percent of manganese oxide, 5 to 10 mol percent of manganese oxide, 0.008 to 0.06 weight percent of calcium carbonate, 0.01 to 0.05 weight percent of niobium pentoxide, 0.01 to 0.05 weight percent of tin oxide, 0.01 to 0.08 weight percent of zirconium dioxide, 0.01 to 0.03 weight percent of vanadium pentoxide, 0.01 to 0.05 weight percent of titanium dioxide, 0.01 to 0.05 weight percent of bismuth oxide, 0.01 to 0.03 weight percent of copper oxide, 0.01 to 0.03 weight percent of silicon dioxide and the balance of zinc oxide. A mixture of calcium carbonate and silicon dioxide in ferrite powder is concentrated on a grain boundary during high-temperature sintering to form a high-resistivity barrier layer, and the components are combined and doped on the basis of optimizing a sintering process, so that the grain boundary resistivity is further improved, the power loss is reduced, and the magnetic permeability is improved; the comprehensive performance of the ferrite is improved.
本发明提供一种高电阻率功率型的MnZn铁氧体材料及其制备方法，涉及铁氧体材料技术领域。一种高电阻率功率型的MnZn铁氧体材料，包括以下质量百分比的原料：氧化铁50～60mol％、氧化锰30～40mol％、氧化锰5～10mol％、碳酸钙0.008～0.06wt％、五氧化二铌0.01～0.05wt％、氧化锡0.01～0.05wt％、二氧化锆0.01～0.08wt％、五氧化二钒0.01～0.03wt％、二氧化钛0.01～0.05wt％、氧化铋0.01～0.05wt％、氧化铜0.01～0.03wt％、二氧化硅0.01～0.03wt％，通过铁氧体粉料中的碳酸钙和二氧化硅混合物在高温烧结时将集中在晶粒边界上，而形成高电阻率的阻挡层，同时优化结烧工艺为基础同时配合上述配料进行组合掺杂，进一步提高晶界电阻率、降低功率损耗以及提高导磁率的效果，使得铁氧体的综合性能得到提升。
High-resistivity power type MnZn ferrite material and preparation method thereof
一种高电阻率功率型的MnZn铁氧体材料及其制备方法
CHENG HAN (author) / LONG BIN (author) / YANG JIANMING (author) / SHEN WEIMING (author) / HU DI (author)
2023-06-23
Patent
Electronic Resource
Chinese
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