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Synthesis and characterization of balloons and porous blocks of β-SiC using silicone and urethane foam

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Title: Synthesis and characterization of balloons and porous blocks of β-SiC using silicone and urethane foam
Authors: Konno, Hidetaka Browse this author
Sato, Shu'ya Browse this author
Kimura, Ken'ichi Browse this author
Habazaki, Hiroki Browse this author →KAKEN DB
Keywords: Electric conductivity
Oxidation resistance
Issue Date: 2007
Publisher: Elsevier Ltd
Journal Title: Journal of the European Ceramic Society
Volume: 27
Issue: 1
Start Page: 405
End Page: 412
Publisher DOI: 10.1016/j.jeurceramsoc.2006.03.004
Abstract: A process to form different shapes of β-SiC was developed using precursors composed of silicone compounds and urethane foam. Two types of low molecular weight silicone, a Pt catalyst for curing, and a catalyst regulator were impregnated into urethane foam chips with different porosities and bulk densities, and cured at 200 °C for 1 h in air. Formed precursors were converted into β-SiC by pyrolysis at 1600 °C for 1–5 h in argon. Depending on the type of urethane foam, β-SiC balloons and β-SiC blocks with high porosities and low bulk densities were obtained. In addition, fine particles of β-SiC smaller than 100 nm were also obtained by crushing the blocks. For a disk formed by 5 h pyrolysis at 1500 °C, N2 gas permeability, electric conductivity, and oxidation resistance at 900 °C in air were measured. The results indicated that the disk may be used as a gas permeable heater. The process is simple, and the materials for this process are not hazardous and commercially available at low cost.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 金野 英隆

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