Estimation of thermal shock resistance of fine porous alumina by infrared radiation heating method
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概要
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The thermal shock resistance of α-alumina porous capillary, the support material for hydrogen-permselective microporous ceramic membrane was studied. To study the effect of porosity on the thermal shock resistance systematically, porous alumina with different porosities was fabricated, and the thermal shock resistance of the fabricated samples as well as the porous capillary was estimated by the infrared radiation heating method. The mechanical and thermal properties concerned to the thermal shock resistance were also measured and the effect of the porosity on the properties was carefully examined. The fracture strength was not changed with temperature, but decreased with the porosity. The fracture toughness, Youngs modulus and thermal conductivity were also decreased with porosity. Thermal shock resistance of porous alumina was estimated quantitively by the experimental thermal shock parameters, thermal shock strength, R1c and thermal shock fracture toughness, R2c. The thermal shock parameters of porous alumina were much lower than dense alumina, and decreased with porosity due to the decreasing of fracture strength and thermal conductivity. The experimental thermal shock strength was good accordance with that calculated from the material properties in this study. Thermal shock strength of porous alumina capillary at service temperature could be estimated by the comparison experimental and calculated thermal shock strength.
- 公益社団法人 日本セラミックス協会の論文
著者
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HONDA Sawao
Department of Materials Science & Engineering, Nagoya Institute of Technology
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Iwamoto Yuji
Department of Physics, Faculty of Science, Kochi University
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Hashimoto Shinobu
Department Of Environmental And Materials Engineering Nagoya Institute Of Technology
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Honda Sawao
Nagoya Inst. Of Technol. Dep. Of Environmental Materials And Engineering
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OGIHARA Yuuki
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology
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KISHI Tsunego
Department of Environmental and Materials Engineering, Nagoya Institute of Technology
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Iwamoto Yuji
Department Of Environmental Materials And Engineering Nagoya Institute Of Technology
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Honda Sawao
Department Of Environmental Materials And Engineering Nagoya Institute Of Technology
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イワモト ユウジ
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology
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HONDA Sawao
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology
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HONDA Sawao
Department of Environmental and Materials Engineering, Nagoya Institute of Technology
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IWAMOTO Yuji
Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology
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IWAMOTO Yuji
Department of Environmental and Materials Engineering, Nagoya Institute of Technology
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HASHIMOTO Shinobu
Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
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