用模板晶粒生长法制备织构Bi/sub 4/Ti/sub 3/O/sub 12/

ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI:10.1109/ISAF.1996.598182

J. Horn, S.C. Zhang, U. Selvaraj, G. Messing, S. Trolier-McKinstry, M. Yokoyama

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引用次数: 10

摘要

采用模板晶粒生长(TGG)法制备了致密织构的Bi/sub 4/Ti/sub 3/O/sub 12/。采用Bi/sub 2/O/sub 3/与TiO(OH)Cl水溶液共沉淀法制备了相纯纳米Bi/sub 4/Ti/sub 3/O/sub 12/粉体。在1100℃/spl温度下，采用熔盐法可获得长径比为6 ~ 60的片状颗粒。将片状颗粒分散在煅烧的粉末中，并通过带铸造和层压定向。在900-1100℃的温度下烧结，得到密度高达96%的织构陶瓷。通过x射线衍射研究了样品的织构发育，并对模板和未模板样品进行了介电测量。

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Fabrication of textured Bi/sub 4/Ti/sub 3/O/sub 12/ by templated grain growth

Dense, textured Bi/sub 4/Ti/sub 3/O/sub 12/ was produced by templated grain growth (TGG). Phase pure nanosized Bi/sub 4/Ti/sub 3/O/sub 12/ powder was prepared by coprecipitation of an aqueous solution of Bi/sub 2/O/sub 3/ and TiO(OH)Cl. Plate-like particles with aspect ratios of 6-60 were obtained by the molten salt method at 1100/spl deg/C. The plate-like particles were dispersed in the calcined powder and oriented by tape casting and laminating. The laminates were sintered from 900-1100/spl deg/C to obtained textured ceramics up to 96% dense. Texture development was investigated by X-ray diffraction, and dielectric measurements were made on both templated and untemplated samples.

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ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics

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