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Grain‐Growth Kinetics for Alumina in the Absence of a Liquid Phase
Author(s) -
Bennison Stephen J.,
Harmer Martin P.
Publication year - 1985
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.1151-2916.1985.tb15259.x
Subject(s) - sintering , grain growth , kinetics , materials science , grain boundary , liquid phase , phase (matter) , chemical engineering , metallurgy , grain size , crystallography , mineralogy , thermodynamics , chemistry , microstructure , organic chemistry , physics , quantum mechanics , engineering
The kinetics of grain growth in fully dense Al 2 O 3 with and without MgO solute additions were measured for high‐purity samples containing no liquid phases. The MgO was found to suppress the grain‐boundary migration rate by a factor of 50. Compensating lattice defects are suggested to play a role in grain‐growth inhibition. Implications of these results to the sintering of Al 2 O 3 are discussed.