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Ferrite wave-absorbing material with perovskite structure and preparation method of ferrite wave-absorbing material
The invention provides a ferrite wave-absorbing material with a perovskite structure and a preparation method of the ferrite wave-absorbing material. The molecular formula of the ferrite wave-absorbing material with the perovskite structure is NdFe<1-x>NiO<3> (wherein x is equal to 0, 0.1, 0.2 or 0.3). The preparation method comprises the following steps: with neodymium nitrate hexahydrate, iron nitrate nonahydrate and nickel nitrate hexahydrate as raw materials, dissolving the raw materials in deionized water according to a stoichiometric ratio, adding a proper amount of citric acid monohydrate, dropwise adding ammonia water to adjust a pH value to achieve an alkaline environment, and then conducting heating and stirring in a water bath kettle to obtain uniform wet gel; and drying the prepared wet gel in an air dry oven, conducting pre-sintering to obtain a precursor, adding PVA into obtained precursor powder, conducting granulating, performing uniformly grinding, and and carrying out mould pressing to prepare a cylindrical block. The ferrite wave-absorbing material with the perovskite structure has a very good microwave absorbing effect in a microwave band of 2-18 GHz, is wide in absorbing frequency band, and has the advantages that the preparation process is simple, the preparation process is easy to regulate and control and the like.
本发明提供钙钛矿结构的铁氧体吸波材料与制备方法，钙钛矿结构的铁氧体吸波材料分子式为NdFe1‑xNixO3(x＝0,0.1,0.2,0.3)。制备方法通过六水合硝酸钕、九水合硝酸铁和六水合硝酸镍为原料，按化学计量溶解在去离子水中，加入适量的一水合柠檬酸，滴加氨水调节PH为碱性环境中，放置在水浴锅中加热搅拌得到均匀的湿凝胶状；将所制得的湿凝胶放入鼓风干燥箱中干燥后，预烧得到前躯体，将得到前驱体粉末加入PVA造粒并研磨均匀，并用模压制成圆柱块体。本发明的钙钛矿结构的铁氧体吸波材料，在2～18GHz微波波段内具备很好的微波吸收效果，吸收频带宽，具有制备工艺简单、制备过程容易调控等优点。
Ferrite wave-absorbing material with perovskite structure and preparation method of ferrite wave-absorbing material
The invention provides a ferrite wave-absorbing material with a perovskite structure and a preparation method of the ferrite wave-absorbing material. The molecular formula of the ferrite wave-absorbing material with the perovskite structure is NdFe<1-x>NiO<3> (wherein x is equal to 0, 0.1, 0.2 or 0.3). The preparation method comprises the following steps: with neodymium nitrate hexahydrate, iron nitrate nonahydrate and nickel nitrate hexahydrate as raw materials, dissolving the raw materials in deionized water according to a stoichiometric ratio, adding a proper amount of citric acid monohydrate, dropwise adding ammonia water to adjust a pH value to achieve an alkaline environment, and then conducting heating and stirring in a water bath kettle to obtain uniform wet gel; and drying the prepared wet gel in an air dry oven, conducting pre-sintering to obtain a precursor, adding PVA into obtained precursor powder, conducting granulating, performing uniformly grinding, and and carrying out mould pressing to prepare a cylindrical block. The ferrite wave-absorbing material with the perovskite structure has a very good microwave absorbing effect in a microwave band of 2-18 GHz, is wide in absorbing frequency band, and has the advantages that the preparation process is simple, the preparation process is easy to regulate and control and the like.
本发明提供钙钛矿结构的铁氧体吸波材料与制备方法，钙钛矿结构的铁氧体吸波材料分子式为NdFe1‑xNixO3(x＝0,0.1,0.2,0.3)。制备方法通过六水合硝酸钕、九水合硝酸铁和六水合硝酸镍为原料，按化学计量溶解在去离子水中，加入适量的一水合柠檬酸，滴加氨水调节PH为碱性环境中，放置在水浴锅中加热搅拌得到均匀的湿凝胶状；将所制得的湿凝胶放入鼓风干燥箱中干燥后，预烧得到前躯体，将得到前驱体粉末加入PVA造粒并研磨均匀，并用模压制成圆柱块体。本发明的钙钛矿结构的铁氧体吸波材料，在2～18GHz微波波段内具备很好的微波吸收效果，吸收频带宽，具有制备工艺简单、制备过程容易调控等优点。
Ferrite wave-absorbing material with perovskite structure and preparation method of ferrite wave-absorbing material
钙钛矿结构的铁氧体吸波材料与制备方法
YAO QINGRONG (author) / LIANG QIHUA (author) / TONG ZHAOFEI (author) / CHENG LICHUN (author) / LU ZHAO (author) / WANG JIANG (author)
2021-07-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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