| 施主半导化BaTiO3PTC陶瓷耐压性能研究 |
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| 引用本文： | 徐国跃,吴柏源.施主半导化BaTiO3PTC陶瓷耐压性能研究[J].硅酸盐学报,1991,19(5):417-423. |
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| 作者姓名： | 徐国跃 吴柏源 |
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| 作者单位： | 南京航空学院材料系
(徐国跃)，华南理工大学材料所(吴柏源) |
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| 摘 要： | 通过工艺实验,性能测试和微观结构分析,研究了施主掺杂半导化BaTiO_3陶瓷的耐压性能。结果表明,该陶瓷耐压性能不仅与PTC效应,压阻效应有关,还与显微组织结构中存在的玻璃相有关。调整Al_2O_3、SiO_2烧结添加剂比例,在显微组织结构中形成莫来石微晶体的试片,具有良好的耐压性能。依据热平衡原理,建立了PTC陶瓷耐压方程,该方程表征了耐压性能与各影响因素之间的相互关系。本文用该方程对一些实验现象进行了讨论。
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| 关 键 词： | BaTiO3陶瓷 PTC陶瓷 耐压性 |
STUDY ON WITHSTAND VOLTAGE CHARACTERISTICS OF DONOR-DOPED SEMIC ONDUCTING BARIUM TITANATE PTC CERAMICS |
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| Xu Guoyue.STUDY ON WITHSTAND VOLTAGE CHARACTERISTICS OF DONOR-DOPED SEMIC ONDUCTING BARIUM TITANATE PTC CERAMICS[J].Journal of The Chinese Ceramic Society,1991,19(5):417-423. |
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| Authors: | Xu Guoyue |
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| Affiliation: | Xu Guoyue (Nanjing Aeronautical Institute) Wu Baiyan (South China University of Science & Tecnhology) |
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| Abstract: | Withstand voltage characteristics of donor-doped semiconducting BaTiO_3 ceramics was studied by means of process tests, property measurement, and microscopic analysis. The results show that withstand voltage characteristics of the ceramics is not only correlated with both effects of PTC, voltage-dependent resistivity, but also with glass phase in microstructure. Samples containing mullite crystallites in microstructure, formed by adjusting the ratio of Al_2O_3 and SiO_2 sintering additives, have good withstand voltage characteristics. Withstand voltage equation is derived, showing the relationship between withstand voltage characteristics and various factors, according to the principle of heat equilibrium. The experimental phenomena in this study is discussed by means of the above equation. |
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| Keywords: | barium-titanate PTC ceramics withstand voltage microstructure glass phase crystalline phase |
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