2004年7月
Thermo-mechanical stability of porous alumina: effect of sintering parameters
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
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- ,
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- 巻
- 5
- 号
- 4
- 開始ページ
- 387
- 終了ページ
- 392
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/j.stam.2004.01.010
- 出版者・発行元
- NATL INST MATERIALS SCIENCE
Recently, we proposed a two-step heating schedule involving pulse electric current sintering (PECS), a kind of pressure assisted vacuum sintering, and subsequent post-beat treatment in air to fabricate porous alumina support, using commercially available alumina and carbon powders [J. Mater. Res. 18 (2003) 751]. During pressure assisted vacuum sintering, Al2O3-C system of low porosity was obtained and in second stage, i.e. during post-heat treatment in air, carbon particles present in the Al2O3-C system burnt out to form highly porous Al2O3 support. Following our previous brief study, the effects of sintering parameters such as temperature, pressure, and heating rate on the properties of the porous alumina were investigated. The porosity varied between 28 and 38% depending on the sintering parameters. As desired, the pore size distribution did not change with post-heat treatment temperature and hence the mechanical properties as well. It was concurred from this present study that the sintering parameters of PECS greatly influenced pore characteristics and other properties of porous compacts. We admit that the initial composition ratio of powder mixture (Al2O3:C) also plays important role on properties such as porosity, pore size, etc. which is beyond the scope of this present study. (C) 2004 Elsevier Ltd. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.stam.2004.01.010
- ISSN : 1468-6996
- identifiers.cinii_nr_id : 9000239248799
- Web of Science ID : WOS:000224031300001