Fabrication of Porous Alumina-based Ceramics with Hydraulic Inorganic Binder

Takaaki NAGAOKA; Takahisa TSUGOSHI; Yuji HOTTA; Koji WATARI

doi:10.14852/jcersjsuppl.112.0.S277.0

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.S277.0

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.

Ceramic letter

Fabrication of Porous Alumina-based Ceramics with Hydraulic Inorganic Binder

Takaaki NAGAOKA, Takahisa TSUGOSHI, Yuji HOTTA, Koji WATARI

Author information

Keywords: Hydraulic inorganic binder, Porous aluminate, Porosity, Binder, Fugitive material, Calcium hexaaluminate

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

A novel fabrication process for porous alumina-based ceramics (calcium hexaaluminate (CA6)) was developed using hydraulic inorganic binder (calcium dialuminate (CA2)) and water. The CA2 binder and water acted as agents for direct consolidation, and water also acted as a fugitive material to create open pores. The green bodies formed with the CA2 binder and water had low green densities and high compressive strength. The porosity of the sintered CA6 ceramics increased with the content of water in the starting mixture: porosities could be adjusted to 15.7-33.3% with the addition of 20-80 wt.% water. The results of evolved gas analysis-mass spectrometry measurements showed the emissions from the novel fabrication process of the porous CA6 ceramics to be environmentally safe.

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