| 添加剂对Y2Ti2O7陶瓷的微波介电性能的影响（英文） |
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| 引用本文： | 丁佳钰,肖瑗,王哲飞,王丽熙,张其土.添加剂对Y2Ti2O7陶瓷的微波介电性能的影响（英文）[J].无机材料学报,2011(3):327-331. |
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| 作者姓名： | 丁佳钰 肖瑗 王哲飞 王丽熙 张其土 |
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| 作者单位： | 南京工业大学材料科学与工程学院;南京工业大学江苏省无机及复合新材料重点实验室; |
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| 基金项目： | Key University Science Research Project of Jiangsu Province(08KJA430002) |
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| 摘 要： | 研究了CrO3、Nb2O5、SiO2及Al2O3对Y2Ti2O7陶瓷的烧结性能、相组成和微波介电性能的影响.其中Nb2O5掺杂能够降低Y2Ti2O7陶瓷材料的烧结温度,提高基体陶瓷的介电常数和品质因子,引起谐振频率温度系数的明显变化.且随着Nb2O5含量的增多,所有样品的主晶相仍为立方烧绿石型Y2Ti2O7,Nb5+可能进入烧绿石结构中,部分取代Ti4+所在位置.实验结果表明:1mol%Nb2O5掺杂的陶瓷材料在1420℃下烧结致密,具有最佳的微波介电性能:εr=61.8,Q×f=9096GHz(f=5.494GHz),τf=54×10-6/℃.
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| 关 键 词： | 陶瓷 晶体生长 X射线衍射 介电性能 改性 |
Effects of Additives on Dielectric Properties of Y_2Ti_2O_7 Ceramics |
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| DING Jia-Yu,XIAO Yuan,WANG Zhe-Fei,WANG Li-Xi,ZHANG Qi-Tu.Effects of Additives on Dielectric Properties of Y_2Ti_2O_7 Ceramics[J].Journal of Inorganic Materials,2011(3):327-331. |
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| Authors: | DING Jia-Yu XIAO Yuan WANG Zhe-Fei WANG Li-Xi ZHANG Qi-Tu |
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| Affiliation: | DING Jia-Yu1,XIAO Yuan1,WANG Zhe-Fei1,WANG Li-Xi1,ZHANG Qi-Tu1,2(1.College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China,2.Jiangsu Provincial Key Laboratory of New Materials of Inorganic and Its Composites,China) |
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| Abstract: | The effects of CrO3,Nb2O5,SiO2 and Al2O3 on the sintering characteristics,phase composition and microwave dielectric properties of Y2Ti2O7 ceramics were investigated.It was found that Nb2O5 can lower the sintering temperature,increase the permittivity and quality factor of Y2Ti2O7 ceramics,and cause great change of the temperature coefficient of resonant frequency.With the increase of Nb2O5 content,it illustrated that all the samples exhibited cubic pyrochlore-type Y2Ti2O7 as main crystalline phase,and Nb5+... |
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| Keywords: | ceramics crystal growth X-ray diffraction dielectric properties modification |
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