Microstructural control of porous Al<sub>2</sub>TiO<sub>5</sub> by using potato starch as pore-forming agent
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- NISHIJIMA Hitoshi
- Graduate School of Pure and Applied Sciences, University of Tsukuba
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- MAKI Ryosuke
- Graduate School of Pure and Applied Sciences, University of Tsukuba
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- SUZUKI Yoshikazu
- Graduate School of Pure and Applied Sciences, University of Tsukuba Faculty of Pure and Applied Sciences, University of Tsukuba
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Abstract
In this study, we have tried to prepare porous Al2TiO5 ceramics with potato starch as a pore-forming agent at relatively low sintering temperatures by reactive sintering method using fine-grained starting materials. α-Al2O3 powder (0.1 µm) and TiO2 rutile powder (2 µm) were wet-ball milled in ethanol for 2 h in a planetary ball-mill. The mixed powder was blended with 5–30 wt % of potato starch powder in an agate mortar with ethanol. Green samples with no binder were sintered at 1300–1500°C for 2 h in air. The sample contained finer closed pores (<1 µm) as well as the larger pores (5–80 µm). The finer microstructure formation can be explained by (1) the local heating effect via the combustion of potato starch, and (2) water vapor-assisted effect.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 121 (1416), 730-733, 2013
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680263491840
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- NII Article ID
- 130004480190
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- NII Book ID
- AA12229489
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- COI
- 1:CAS:528:DC%2BC3sXhsFWku7zL
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- ISSN
- 13486535
- 18820743
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- HANDLE
- 2241/120938
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed