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Annealing of Test Specimens of High‐Toughness Magnesia‐Partially‐Stabilized Zirconia
Author(s) -
Readey Michael J.,
Heuer Arthur H.,
Steinbrech Rolf W.
Publication year - 1988
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.1151-2916.1988.tb05766.x
Subject(s) - annealing (glass) , cubic zirconia , toughness , materials science , composite material , magnesium , metallurgy , ceramic
The peak toughness of a commercial magnesia‐partially‐stabilized zirconia was strongly dependent on a postprocessing, postspecimen preparation, and modest annealing (1000°C for 20 min), increasing it from ∼9 to almost ∼18 MP a·m 1/2 . Further study of this surprising phenomenon revealed that increases in toughness occurred for annealing temperatures as low as 275°C. The low toughness of the as‐received materials is due to a post‐manufacture room‐temperature aging.