| B位替代对Bi_2(Zn_(1/3)Nb_(2/3))O_7陶瓷介电性能的影响 |
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| 引用本文： | 张红霞,丁士华,陈涛,宋天秀,张东,杨秀玲.B位替代对Bi_2(Zn_(1/3)Nb_(2/3))O_7陶瓷介电性能的影响[J].机械工程材料,2009,33(4). |
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| 作者姓名： | 张红霞 丁士华 陈涛 宋天秀 张东 杨秀玲 |
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| 作者单位： | 西华大学材料科学与工程学院,四川成都,610039
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| 基金项目： | 四川省教育厅科技基金 |
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| 摘 要： | 采用传统的二次球磨固相反应法制备了Bi2(Zn1/3 Nb2/3-x)O7(M为Sn,Zr,Ti)陶瓷,并使用X射线衍射仪、扫描电镜、介电性能测试仪等研究了Sn4+,Zr4+,Ti4+的B位替代对陶瓷烧结温度、物相、显微形貌以及介电性能的影响.结果表明:当替代量x≤0.25时,所得陶瓷均保持单一的单斜焦绿石相结构;Zr4+,Ti4+什替代的陶瓷达到最致密的烧结温度与未经替代的一致,而Sn4+替代的陶瓷在1 020℃烧结才可以达到最致密;用Ti4+,Zr4+替代的陶瓷晶粒尺寸与基体的相当,而Sn4+替代的陶瓷晶粒尺寸大小不一;Sn4+,Zr4+替代的陶瓷介电常数温度系数随着替代量的增加逐渐减小,Sn4+替代的陶瓷在x=0.25时为负值,Ti4+替代的陶瓷介电常数温度系数随着替代量的增加先增大后减小,但始终为正值.
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| 关 键 词： | Bi2O3-ZnO-Nb2O5基陶瓷 烧结温度 介电性能 |
Effect of B Site Substitution on Dielectric Properties of Bi_2(Zn_(1/3)Nb_(2/3))O_7 Based Ceramics |
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| ZHANG Hong-xia,DING Shi-hua,CHEN Tao,SONG Tian-xiu,ZHANG Dong,YANG Xiu-ling.Effect of B Site Substitution on Dielectric Properties of Bi_2(Zn_(1/3)Nb_(2/3))O_7 Based Ceramics[J].Materials For Mechanical Engineering,2009,33(4). |
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| Authors: | ZHANG Hong-xia DING Shi-hua CHEN Tao SONG Tian-xiu ZHANG Dong YANG Xiu-ling |
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| Affiliation: | Xihua University;Chengdu 610039;China |
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| Abstract: | The Bi2(Zn1/3Nb2/3-xMx)2O7(M was Sn,Zr,Ti) ceramics were prepared by traditional second solid phase reaction method.The effect of B site substitution of Sn4+,Ti4+,Zr4+ on the sintering temperature,microstructure and dielectric properties was investigated by means of XRD,SEM and dielectric property testing analyzer.The results show that the ceramic kept single monoclinic pyrochlore phase when Sn4+,Zr4+ and Ti4+ substitution content was no more than 0.25.The sintering temperature for the density ceramics subs... |
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| Keywords: | Bi2O3-ZnO-Nb2O ceramics sintering temperature dielectric properties |
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