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Building a sintering front through fast firing
Publikationstyp
Journal Article
Date Issued
2011-03-24
Sprache
English
Author(s)
Volume
8
Issue
6
Start Page
1486
End Page
1493
Citation
International Journal of Applied Ceramic Technology 8 (6): 1486-1493 (2011)
Publisher DOI
Scopus ID
Publisher
Wiley-Blackwell
High-density alumina was produced by fast firing (5 min, temperatures ≤1550°C). Most of densification occurred under nonisothermal conditions. High densification rates observed are related to a change in the internal structure of the compact. The formation of a dense outer alumina layer controlled the heat flux to the interior of the compact, and increased the amount of energy available for sintering. Sintering in fast firing occurred as a densification front moving from the outer surface toward the sample center. As long as the rate of heat transfer is enough to sustain its advance, no differential densification occurs. © 2011 The American Ceramic Society.
DDC Class
530: Physik
540: Chemie