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A High‐Strain‐Rate Alumina‐Based Ceramic Composite
Author(s) -
Chen Tiandan,
Mecartney Martha L.
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.1551-2916.2005.00190.x
Subject(s) - mullite , materials science , superplasticity , creep , ceramic , composite material , cubic zirconia , grain size , strain rate , composite number , stress (linguistics) , activation energy , grain growth , microstructure , chemistry , linguistics , philosophy , organic chemistry
An alumina‐based ceramic codispersed with zirconia and mullite was synthesized with a submicron grain size. At high temperatures, steady‐state creep with very limited grain growth was achieved for samples with 40 vol% alumina, 30 vol% zirconia, and 30 vol% mullite (AZ30M30). Constant stress compressive creep behavior of AZ30M30 showed a stress exponent of 2 and an activation energy of 880 kJ/mol. A strain rate of 0.01 s −1 was obtained for AZ30M30 at 60 MPa and 1500°C, indicating the potential for high‐strain‐rate superplasticity.