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High‐Temperature Young's Modulus of Alumina During Sintering
Author(s) -
Latella Bruno A.,
Liu Tianshun
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00082.x
Subject(s) - sintering , materials science , modulus , composite material , porosity , ceramic , young's modulus
High‐temperature Young's modulus of a partially sintered alumina ceramic has been studied dynamically during the sintering process. Comparative, room‐temperature Young's modulus data were obtained for a suite of partially sintered alumina compacts with different porosities. The dynamic Young's modulus of a 1200°C partially sintered material was observed to decrease linearly with temperature, but then above 1200°C it increased sharply as sintering and densification of the alumina became dominant. The evolution of the Young's modulus due purely to sintering exhibited an exponential relationship with porosity in excellent agreement with room‐temperature measurements of equivalent porous alumina ceramics.