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Sintering of fibrous barium titanate powder compacts with preferred orientation

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Abstract

The sintering of fibrous BaTiO3 powder particles was investigated. Special emphasis was given to the role of particle orientation in the compact on densification and microstructure development. Compacts were made by dry-pressing. During the initial stage of sintering, the fibrous particles rearranged and bundles of particles were formed. The volume of pores between bundles of particles decreased on further heating. Grain growth started when the sintered density reached ca. 56% of the theoretical density. Higher temperatures of sintering increased the degree of the crystal axis orientation. Thus, highly orientated sintered bodies with high densities were prepared by heating at 1500 °C.

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Authors and Affiliations

  1. Ceramics Research Department, Central Research Laboratory, Sekisui Plastic Co. Ltd, Morimoto 670, Tenri-city, 632, Nara, Japan

    Yoshinobu Ohara & Takeshi Taki

  2. Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Megro-ku, 153, Tokyo, Japan

    Masaru Miyayama

  3. Department of Industrial Chemistry, Faculty of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, 113, Tokyo, Japan

    Hiroaki Yanagida

Authors
  1. Yoshinobu Ohara
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  2. Takeshi Taki
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  3. Masaru Miyayama
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  4. Hiroaki Yanagida
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Ohara, Y., Taki, T., Miyayama, M. et al. Sintering of fibrous barium titanate powder compacts with preferred orientation. J Mater Sci 31, 5327–5332 (1996). https://doi.org/10.1007/BF01159300

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  • DOI: https://doi.org/10.1007/BF01159300

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