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Synthesis and characterization of balloons and porous blocks of β-SiC using silicone and urethane foam
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 | Precursors-organic | Porosity | SiC |
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. |
Relation: | http://www.sciencedirect.com/science/journal/09552219 |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/17115 |
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)
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Submitter: 金野 英隆
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