| MgO-TiO_2-CaO-SiO_2低介微波介质陶瓷材料研究 |
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| 引用本文： | 焦向全,钟朝位,张树人.MgO-TiO_2-CaO-SiO_2低介微波介质陶瓷材料研究[J].电子元件与材料,2010,29(2). |
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| 作者姓名： | 焦向全 钟朝位 张树人 |
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| 作者单位： | 电子科技大学,电子薄膜与集成器件国家重点实验室,四川,成都,610054 |
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| 基金项目： | 国防基础科研基金资助项目 |
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| 摘 要： | 采用固相反应法,在0.92MgTiO3-0.08CaTiO3配比的基础上,制备了不同Mg2SiO4添加量的MgO-TiO2-CaO-SiO2复合陶瓷体系,研究了Mg2SiO4添加量对其物相结构、微观形貌及微波介电性能的影响。结果表明,体系中不存在杂相,其致密化烧结温度随Mg2SiO4添加量的增加而提高,添加适量Mg2SiO4能够降低体系的εr和谐振频率温度系数τf。当添加质量分数为35%的Mg2SiO4,体系在1360℃烧结2h可获得优异的微波介电性能:εr=15.5,Q·f=42640GHz(6GHz),τf=–13×10–6/℃。
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| 关 键 词： | 微波介质陶瓷 介电性能 偏钛酸镁(MgTiO3) 主晶相 致密化烧结 |
Study on MgO-TiO_2-CaO-SiO_2 microwave dielectric ceramics with low permittivity |
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| JIAO Xiangquan,ZHONG Chaowei,ZHANG Shuren.Study on MgO-TiO_2-CaO-SiO_2 microwave dielectric ceramics with low permittivity[J].Electronic Components & Materials,2010,29(2). |
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| Authors: | JIAO Xiangquan ZHONG Chaowei ZHANG Shuren |
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| Affiliation: | State Key Laboratory of Electronic Thin Film and Integrated Devices;University of Electronic Science and Technology of China;Chengdu 610054;China |
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| Abstract: | MgO-TiO2-CaO-SiO2 composite ceramic system with different Mg2SiO4 addition amounts were prepared from the raw materials consisting of 92% (mole fraction) MgTiO3 and 8% (mole fraction) CaTiO3 by the solid-state reaction method. The effects of Mg2SiO4 addition amount on the phase structure, micromorphology and microwave dielectric properties of the system were studied. The results show that there is no secondary phase in the system and the sintering temperature increases with the increasing of Mg2SiO4 additio... |
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| Keywords: | microwave dielectric ceramic dielectric property MgTiO3 major phase densification sintering |
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