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W-type barium-cobalt ferrite/cobalt-iron alloy material based on desolvation method and preparation and application thereof
The invention relates to a W-type barium-cobalt ferrite/cobalt-iron alloy material based on a desolvation method as well as preparation and application thereof. The preparation method comprises the following steps: (1) uniformly mixing a barium source, a cobalt source, an iron source, a zinc source and polyvinylpyrrolidone, and freeze-drying to obtain precursor powder; (2) sintering the precursor powder to obtain W-type barium-zinc-cobalt ferrite of which the main phase is BaZn < 2-x > Co < x > Fe < 16 > O < 27 >; and (3) carrying out controllable reduction desolvation on the W-type barium-zinc-cobalt ferrite in a hydrogen-argon atmosphere to obtain a W-type barium-zinc-cobalt ferrite/ferrocobalt alloy (BaZn < 2-x > CoxFe16O27/CoFe) material, namely a target product. According to the invention, the original materials with different intrinsic resonance peak values are synthesized into a composite system, so that the composite wave-absorbing material with strong resonance wave-absorbing characteristics in a low-frequency microwave (2-8GHz) wave band is obtained, the overall preparation process is simple, the industrial applicability is good, and the composite wave-absorbing material can be widely applied to corresponding electromagnetic absorption and microwave stealth fields.
本发明涉及一种基于脱溶法的W型钡钴铁氧体/钴铁合金材料及其制备和应用，该制备方法包括以下步骤：(1)将钡源、钴源、铁源、锌源和聚乙烯吡咯烷酮混合均匀，冻干得到前驱体粉末；(2)将前驱体粉末烧结，得到主相为BaZn2–xCoxFe16O27的W型钡锌钴铁氧体；(3)将W型钡锌钴铁氧体在氢氩气氛下进行可控还原脱溶，得到W型钡锌钴铁氧体/钴铁合金(BaZn2–xCoxFe16O27/CoFe)材料，即为目标产物。本发明将原本具有不同本征共振峰值的材料合成为一个复合体系，从而获得在低频微波(2～8GHz)波段具有强共振吸波特性的复合吸波材料，整体制备工艺简单，工业化应用性佳，可广泛应用于相应的电磁吸收以及微波隐身领域。
W-type barium-cobalt ferrite/cobalt-iron alloy material based on desolvation method and preparation and application thereof
The invention relates to a W-type barium-cobalt ferrite/cobalt-iron alloy material based on a desolvation method as well as preparation and application thereof. The preparation method comprises the following steps: (1) uniformly mixing a barium source, a cobalt source, an iron source, a zinc source and polyvinylpyrrolidone, and freeze-drying to obtain precursor powder; (2) sintering the precursor powder to obtain W-type barium-zinc-cobalt ferrite of which the main phase is BaZn < 2-x > Co < x > Fe < 16 > O < 27 >; and (3) carrying out controllable reduction desolvation on the W-type barium-zinc-cobalt ferrite in a hydrogen-argon atmosphere to obtain a W-type barium-zinc-cobalt ferrite/ferrocobalt alloy (BaZn < 2-x > CoxFe16O27/CoFe) material, namely a target product. According to the invention, the original materials with different intrinsic resonance peak values are synthesized into a composite system, so that the composite wave-absorbing material with strong resonance wave-absorbing characteristics in a low-frequency microwave (2-8GHz) wave band is obtained, the overall preparation process is simple, the industrial applicability is good, and the composite wave-absorbing material can be widely applied to corresponding electromagnetic absorption and microwave stealth fields.
本发明涉及一种基于脱溶法的W型钡钴铁氧体/钴铁合金材料及其制备和应用，该制备方法包括以下步骤：(1)将钡源、钴源、铁源、锌源和聚乙烯吡咯烷酮混合均匀，冻干得到前驱体粉末；(2)将前驱体粉末烧结，得到主相为BaZn2–xCoxFe16O27的W型钡锌钴铁氧体；(3)将W型钡锌钴铁氧体在氢氩气氛下进行可控还原脱溶，得到W型钡锌钴铁氧体/钴铁合金(BaZn2–xCoxFe16O27/CoFe)材料，即为目标产物。本发明将原本具有不同本征共振峰值的材料合成为一个复合体系，从而获得在低频微波(2～8GHz)波段具有强共振吸波特性的复合吸波材料，整体制备工艺简单，工业化应用性佳，可广泛应用于相应的电磁吸收以及微波隐身领域。
W-type barium-cobalt ferrite/cobalt-iron alloy material based on desolvation method and preparation and application thereof
基于脱溶法的W型钡钴铁氧体/钴铁合金材料及其制备和应用
CHE RENCHAO (author) / YUAN MINGYUE (author) / YANG LITING (author) / YOU WENBIN (author) / LYU HUALIANG (author) / LI BANGXIN (author)
2024-04-09
Patent
Electronic Resource
Chinese
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