Liguid Phase Sintering of Ca0.9Sr0.1TiO3 Dielectric Ceramics

Ruixing LI; Yukishige YAMAGUCHI; Qing TANG; Shu YIN; Mamoru OMORI; Tsugio SATO

doi:10.14852/jcersjsuppl.112.0.S309.0

Journal of the Ceramic Society of Japan, Supplement 112-1, PacRim5 Special Issue

Session ID : 4

DOI https://doi.org/10.14852/jcersjsuppl.112.0.S309.0

Conference information

Host: The Ceramic Society of Japan

Co-host: Iketani Science and Technology Foundation, International Ceramic Federation, Commemorative Organization for the Japan World Exposition '70, The American Ceramic Society, The Australasian Ceramic Society, The Chinese Ceramic Society, The Korean Ceramic Society, Joint Research Consortium of Synergy Ceramics/Fine Ceramics Research Association, Nanotechnology Researchers Network Center of Japan, The Special Coordination Funds for Promoting Science and Technology, Japan National Tourist Organization, Aichi Prefectural Government, CASIO SCIENCE PROMOTION FOUNDATION, DAIKO FOUNDATION, Nagoya Convention and Visitors Bureau, The Asahi Glass Foundation, The Kao Foundation For Arts And Sciences, The Murata Science Foundation, The Ogasawara Foundation for the Promotion of Science & Engineering, ASAHI GLASS CO., LTD. Research Center, CENTRAL GLASS CO., LTD., ELECTRIC GLASS INDUSTRY ASSOCIATION OF JAPAN (EGAJ), Hattori Company, Ltd., Hitachi Research Laboratory, Hitachi, Ltd., HOYA CORPORATION, INAX Corporation, ITOCHU CERATECH CORP., Japan Cement Association, KYOCERA Corporation, KYUSHU REFRACTORIES CO., LTD., MINO CERAMIC CO., LTD., Murata Manufacturing Co., Ltd., NGK INSULATORS LTD., NGK SPARK PLUG CO., LTD., NICHIAS Corporation, NIKKO COMPANY, Nippon Electric Glass Co., Ltd., Nippon Sheet Glass Co., Ltd., NORITAKE CO., LIMITED, Tokuyama Corporation, TOTO LTD.

Papers

Liguid Phase Sintering of Ca_0.9Sr_0.1TiO₃ Dielectric Ceramics

Ruixing LI, Yukishige YAMAGUCHI, Qing TANG, Shu YIN, Mamoru OMORI, Tsugio SATO

Author information

Keywords: Ca_0.9Sr_0.1TiO₃, Li₂Si₂O₅, Sintering additive, Liquid phase sintering, Spark plasma sintering (SPS)

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Abstract

Ca_0.9Sr_0.1TiO₃ ceramics were prepared both by conventional liquid phase sintering and spark plasma sintering (SPS). Although the sintering of Ca_0.9Sr_0.1TiO₃ powder without sintering aid required a high temperature of 1400°C, they could be densified at 1200 and 1170°C by liquid phase sintering using Li₂Si₂O₅ and SPS, respectively. The optimum concentration of Li₂Si₂O₅ to obtain high density and high dielectric strength was 0.5 mass%. The sample prepared by SPS showed a higher fracture strength and Vickers hardness than those prepared by liquid phase sintering, while the fracture toughness and permittivity of both samples were almost identical.

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