SrTiO/ sub3 /钙钛矿陶瓷致密化的研究

Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1994-08-07 DOI:10.1109/ISAF.1994.522353

Kuo-Shung Liu, I. Lin

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引用次数: 0

摘要

采用新型烧结技术提高了SrTiO/ sub3 /材料的致密性。另一方面，加热和微波烧结可以显著增强离子的扩散，从而很容易克服混合氧化物粉末的不良特性，使材料烧结得很好。在1220/spl℃的微波烧结温度下，材料已经开始致密化，而在1250/spl℃的微波烧结温度下，晶粒才开始长大。在致密化过程开始时施加短温度脉冲可以有效地触发晶界的迁移。

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Enhanced densification of SrTiO/sub 3/ perovskite ceramics

The densification of SrTiO/sub 3/ materials has been enhanced by using the novel sintering techniques. The hipping and microwave sintering, on the other hand, can enhance the diffusion of the ions markedly such that the undesired feature of the mixed oxide powders is easily overcome and the materials are well sintered. The densification of the materials has already started when microwave sintered at 1220/spl deg/C, but the growth of the grains can occur only when microwave sintered at 1250/spl deg/C. The migration of grain boundaries can be effectively triggered by applying a short temperature pulse at the onset of the densification process.

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Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics

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