| (Ba_(1-α)Sr_α)_(4.8)(Sm_(0.7)La_(0.3))_(8.8)Ti_(18)O_(54)陶瓷的微波介电性能 |
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| 引用本文： | 谭颖,沈春英,丘泰.(Ba_(1-α)Sr_α)_(4.8)(Sm_(0.7)La_(0.3))_(8.8)Ti_(18)O_(54)陶瓷的微波介电性能[J].硅酸盐学报,2009,37(6). |
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| 作者姓名： | 谭颖 沈春英 丘泰 |
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| 作者单位： | 南京工业大学材料科学与工程学院,南京,210009 |
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| 摘 要： | 采用固相合成法制备了(Ba(1-α)Srα)4.8(Sm0.7La0.3)8.8Ti18O54(α=0.1～0.5)系陶瓷,表征了该陶瓷的相组成和显微结构,测试了微波介电性能.结果表明:α=0.3时,(Ba(1-α)Srα)4.8(Sm0.7La0.3)8.8Ti18O54系陶瓷为单相的新钨青铜结构固溶体.α>0.3时,相继出现了第二相BaLa2Ti4O12和La0.66TiO2.993.随α的增加,(Ba(1-α)Srα)4.8(Sm0.7La0.3)8.8Ti18O54系陶瓷的相对介电常数(εr)先增大后有所波动,品质因数(Qf)先增大后减小,谐振频率温度系数(τf)单调减小.α=0.3时,在1 350℃烧结的陶瓷的微波介电性能最佳:εr=98.77,Qf=5184GHz,τf=10.9×10-6/℃,优于不掺杂的BaO-Sm2O3-TiO2陶瓷的.
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| 关 键 词： | 微波介质陶瓷 新钨青铜结构固溶体 微波介电性能 |
MICROWAVE DIELECTRIC PROPERTIES OF(Ba_(1-a)Sr_a)_(4.8)(Sm_(0.7)La_(0.3))_(8.8)Ti_(18)O_(54) CERAMICS |
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| TAN Ying,SHEN Chunying,QIU Tai.MICROWAVE DIELECTRIC PROPERTIES OF(Ba_(1-a)Sr_a)_(4.8)(Sm_(0.7)La_(0.3))_(8.8)Ti_(18)O_(54) CERAMICS[J].Journal of The Chinese Ceramic Society,2009,37(6). |
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| Authors: | TAN Ying SHEN Chunying QIU Tai |
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| Affiliation: | College of Materials Science and Engineering;Nanjing University of Technology;Nanjing 210009;China |
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| Abstract: | |
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| Keywords: | microwave dielectric ceramics new tungsten bronze structure solid solution microwave dielectric property |
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