Premium
Sintering and Characterization of Polycrystalline Monoclinic, Tetragonal, and Cubic Zirconia
Author(s) -
Cutler Raymond A.,
Reynolds James R.,
Jones Aaron
Publication year - 1992
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.1151-2916.1992.tb04480.x
Subject(s) - monoclinic crystal system , tetragonal crystal system , materials science , crystallite , cubic zirconia , sintering , crystallography , fracture toughness , mineralogy , composite material , metallurgy , crystal structure , ceramic , chemistry
Polycrystalline monoclinic ( m ), tetragonal ( t ), and cubic ( c ) ZrO 2 , sintered at 1500°C, were annealed in the cubic stability field and rapidly cooled to permit the displacive c → t ′ transformation to occur in compositions containing 0–6 mol% Y 2 O 3 . The bulk fracture toughness of coarse‐grained (> 25 μm) m , t ′, and c zirconias were compared with conventionally sintered, fine‐grained (typically less than 1 μm) materials. The ferroelastic monoclinic and tetragonal zirconias were more than twice as tough as paraelastic cubic zirconia.