| Y_2O_3掺杂超细(Ba,Sr)TiO_3基电容器陶瓷的研究 |
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| 引用本文： | 管浩,王路明,姜松.Y_2O_3掺杂超细(Ba,Sr)TiO_3基电容器陶瓷的研究[J].电子元件与材料,2009,28(1). |
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| 作者姓名： | 管浩 王路明 姜松 |
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| 作者单位： | 盐城工学院,材料工程学院,江苏,盐城,224051 |
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| 摘 要： | 通过sol-gel法制得高纯、超细的Ba0.7Sr0.3TiO3粉体。以液相法掺杂MgO、ZnO、Bi2O3,和Y2O3等物质,得到平均粒径为50nm左右的混合粉体,制备出超细晶BST电容器陶瓷。分析了掺杂Y2O3对BST电容器陶瓷介电性能和显微结构的影响。结果表明:适量的Y2O3掺杂能够明显改善陶瓷介电性能,当w(Y2O3)为0.75%,烧结温度为1200℃时,得到了εr为2538,tanδ为0.006,耐压强度为5.83×103V/mm的BST电容器陶瓷。
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| 关 键 词： | 无机非金属材料 电容器陶瓷 Ba_(0.7)Sr_(0.3)TiO_3 sol-gel法 超细粉体 介电性能 掺杂 |
Study on ultra-fine (Ba, Sr)TiO_3 ceramic for capacitors doped with Y_2O_3 |
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| GUAN Hao,WANG Luming,JIANG Song.Study on ultra-fine (Ba, Sr)TiO_3 ceramic for capacitors doped with Y_2O_3[J].Electronic Components & Materials,2009,28(1). |
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| Authors: | GUAN Hao WANG Luming JIANG Song |
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| Affiliation: | School of Materials Engineering;Yancheng Institute of Technology;Yancheng 224051;Jiangsu Province;China |
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| Abstract: | The highly pure and ultra-fine (Ba, Sr)TiO3 powder was prepared with sol-gel method, and its average size was about 50 nm. Using such powder with addition of the dopants MgO、ZnO、Bi2O3 and Y2O3, ultra-fine grain BST capacitor ceramics were prepared, and the effect of doping Y2O3 on dielectric properties and microstructure of BST ceramics were investigated. The results indicate: proper Y2O3 can obviously improve the dielectric properties of BST ceramics; when the w(Y2O3) is 0.75% and the sintering temperature is 1 200 ℃, εr of the BST capacitor ceramics is 2 538, tanδ is 0.006 and high DC breakdown voltage is 5.83×103 V/mm. |
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| Keywords: | Ba0 7Sr0 3TiO3 |
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