| 激光制备高介CaTiO3-CaTiSiO5高频介质陶瓷 |
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| 引用本文： | 田得雨,晁明举,张俊吉,李明玉,钱华丽. 激光制备高介CaTiO3-CaTiSiO5高频介质陶瓷[J]. 激光杂志, 2011, 0(5): 32-34 |
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| 作者姓名： | 田得雨 晁明举 张俊吉 李明玉 钱华丽 |
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| 作者单位： | 郑州大学物理工程学院材料物理教育部重点实验室,郑州450052 |
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| 基金项目： | 国家自然科学基金（51072238）资助项目. |
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| 摘 要： | 采用激光烧结技术成功制备致密、高介电常数的CaTiO3-CaTiSiO5高频介质陶瓷。使用X射线衍射仪、扫描电子显微镜分析样品的晶相组成和显微组织，利用精密阻抗分析仪测试陶瓷样品的介电性能。结果表明，激光烧结CaTiO3-CaTiSiO5介质陶瓷致密、介电常数（εr=376）高达固相烧结样品的5倍，这应归因于激光烧结C...
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| 关 键 词： | 激光烧结 高频介质陶瓷 CaTiO3-CaTiSiO5 介电性能 |
Laser sintered high - frequency dielectric ceramics of CaTiO3 - CaTiSiO5 with high dielectric constant |
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| Affiliation: | TIAN De-yu, CHAO Ming- ju, ZHANG Jun- ji, LIMing- yu, QIAN Hua- li (Key Laboratory of Material Physics of Ministry of Education, Department of Physics,Zhengzhou University, Zhengzhou 450052, China) |
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| Abstract: | High- frequency dielectric ceramics CaTi03 - CaTiSiO5 with high dielectric constant was successfully prepared by laser sintering. The mierastructure observation and phase analysis of the CaTiO3 - CaTiSiO5 ceramics were performed by a scanning electron microscopy and X - ray diffiractometer. And the dielectric property was measured by precision impedance analyzer. The results show that the CaTiO3 - CaTiSiO5 ceramics by laser sintering has high dielectric constant （ εr = 376 ）, which is as high as 5 times that of one sintered with a furnace. This could be attributed to the CaTiO3 - CaTiSiO5 by laser sintering possesses a special mierostructure, namely an oriented dendrites growing against the heat exchange, which size can be hundreds of micron. |
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| Keywords: | Laser sintering High- frequency dielectric ceramics CaTiO3 - CaTiSi05 dielectric properties |
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