BaFe12O19/SiO2-B2O3-K2O 微晶玻璃陶瓷的低温合成及其微波性能

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BaFe₁₂O₁₉/SiO₂-B₂O₃-K₂O 微晶玻璃陶瓷的低温合成及其微波性能

基金项目: 国家自然科学基金资助重大项目(59995320)

1.
High Temperature Ceramics Inst itute, Zhengzhou University, Zhengzhou 450052, China;
2.
Medical College of Zhengzhou University, Zhengzhou 450052, China;
3.
Functional Material Research Laboratory, Tongji University, Shanghai 200092, China

摘要: 采用柠檬酸sol-gel工艺合成了BaFe₁₂O₁₉/SiO₂-B₂O₃-K₂O微晶玻璃陶瓷, 并对其介电常数及其磁导率在100MHz～ 6 GHz 下的变化规律进行了研究。结果表明: BaFe₁₂O₁₉/SiO₂-B₂O₃-K₂O微晶玻璃陶瓷可以在850℃/5 h的条件下烧结而成, 其合成过程与体系中的Ba/Fe 密切相关; 其介电常数基本不随测试频率的变化而变化; 其磁导率实部随测试频率的增加而下降。
- BaFe₁₂O₁₉/SiO₂-B₂O₃-K₂O /
- 微晶玻璃陶瓷 /
- 溶胶-凝胶 /
- 微波性能
Abstract: BaFe₁₂O₁₉/SiO₂-B₂O₃-K₂O microcrystallite glass ceramics were prepared by citrate sol-gel process. The dielectric constan tand permeability dispersion were investigated in 100MHz ～ 6. 0 GH zrange. It was discovered that the synthesis temperature of BaFe₁₂O₁₉/SiO₂-B₂O₃-K₂O microcrystallite glass ceramics is about 850℃ and the condition such as Ba/Fe had a close effect on the syn thesis of BaFe₁₂O₁₉/SiO₂-B₂O₃-K₂O. It also showed that the dielectric exhib it salmo stnovariation with measuring frequency increasing. The real part of permeability decreases as the measuring frequency increasing.
- BaFe₁₂O₁₉/SiO₂-B₂O₃-K₂O /
- microcrystallite glass ceramics /
- sol-gel /
- microwave properties