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Low-loss soft magnetic ferrite material and preparation method thereof
The invention discloses a low-loss soft magnetic ferrite material and a preparation method thereof. Lithium oxide is introduced into a pre-sintered mixture, so that the microstructure of the soft magnetic ferrite material is improved, the grain size is reduced, and the loss of the soft magnetic ferrite material is further reduced; meanwhile, additives of MoO3, ZrO2 and CaCO3 are further added, MoO3 is added, the shrinkage rate of the blank can be reduced, the sintering density can be improved, ZrO2 and CaCO3 have high resistivity, the growth process of crystal grains can be regulated and controlled, the crystal grains can be refined, and high-frequency loss can be restrained by improving the resistivity of the grain boundary; through interaction of various additives, grains can be refined and become uniform, and the effect of low high-frequency loss is achieved.
本发明公开了一种低损耗软磁铁氧体材料及其制备方法，本发明通过在预烧混合物中引入氧化锂，改善了软磁铁氧体材料的微观结构，减少了晶粒尺寸，进一步降低了软磁铁氧体材料的损耗；同时，本发明还添加有MoO3、ZrO2和CaCO3添加剂，添加MoO3能够减缓毛坯的收缩速率，提高烧结密度，ZrO2和CaCO3具有较高的电阻率，能够调控晶粒的生长过程，细化晶粒，能够通过提高晶界的电阻率从而抑制高频损耗；本发明通过多种添加剂的相互作用，能够细化晶粒并使晶粒变得均匀，具有高频损耗较低的效果。
Low-loss soft magnetic ferrite material and preparation method thereof
The invention discloses a low-loss soft magnetic ferrite material and a preparation method thereof. Lithium oxide is introduced into a pre-sintered mixture, so that the microstructure of the soft magnetic ferrite material is improved, the grain size is reduced, and the loss of the soft magnetic ferrite material is further reduced; meanwhile, additives of MoO3, ZrO2 and CaCO3 are further added, MoO3 is added, the shrinkage rate of the blank can be reduced, the sintering density can be improved, ZrO2 and CaCO3 have high resistivity, the growth process of crystal grains can be regulated and controlled, the crystal grains can be refined, and high-frequency loss can be restrained by improving the resistivity of the grain boundary; through interaction of various additives, grains can be refined and become uniform, and the effect of low high-frequency loss is achieved.
本发明公开了一种低损耗软磁铁氧体材料及其制备方法，本发明通过在预烧混合物中引入氧化锂，改善了软磁铁氧体材料的微观结构，减少了晶粒尺寸，进一步降低了软磁铁氧体材料的损耗；同时，本发明还添加有MoO3、ZrO2和CaCO3添加剂，添加MoO3能够减缓毛坯的收缩速率，提高烧结密度，ZrO2和CaCO3具有较高的电阻率，能够调控晶粒的生长过程，细化晶粒，能够通过提高晶界的电阻率从而抑制高频损耗；本发明通过多种添加剂的相互作用，能够细化晶粒并使晶粒变得均匀，具有高频损耗较低的效果。
Low-loss soft magnetic ferrite material and preparation method thereof
一种低损耗软磁铁氧体材料及其制备方法
CHEN SIXUE (Autor:in) / LI JINGSONG (Autor:in) / DU ZHENWEN (Autor:in) / CHEN CHANGHU (Autor:in) / CHEN CHAOREN (Autor:in) / NI MENGHUI (Autor:in)
06.08.2024
Patent
Elektronische Ressource
Chinesisch
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