Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 31, Issue 1-2, Pages 231-235Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2010.08.015
Keywords
Sintering; Al2O3; Homogeneous microstructure; Grain size
Categories
Funding
- EU [NMP3-CT-2005-515784]
- Knut and Alice Wallenberg Foundation
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Homogeneous microstructure control in the SPS (spark plasma sintering) sintered big size Al2O3 ceramic was realized by the synergy effect of grain boundary tailoring and proper pressure profile design Two-step pressure profile itself did not show any efficient densification enhancement if no grain boundary modifier MgO added The two-step pressure profile can effectively reduce average grain size and grain size difference over the sintered specimen, while MgO doping can reduce the average grain size in the whole sintered samples Finally a general strategy to overcome the intrinsic temperature gradient in SPS is suggested (C) 2010 Elsevier Ltd All rights reserved
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