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Structural Changes by Compressive Stresses of 2.0‐mol%‐Yttria‐Stabilized Tetragonal Zirconia Polycrystals
Author(s) -
Kitano Yukishige,
Mori Yuuji,
Ishitani Akira,
Masaki Takaki
Publication year - 1989
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.1151-2916.1989.tb06232.x
Subject(s) - tetragonal crystal system , materials science , monoclinic crystal system , compressive strength , phase (matter) , residual stress , yttria stabilized zirconia , stress (linguistics) , composite material , cubic zirconia , crystallography , mineralogy , crystal structure , geology , ceramic , chemistry , linguistics , philosophy , organic chemistry
Reorientation of the tetragonal (002) peak in tetragonal ZrO 2 polycrystals (TZP) (so‐called domain switching) was studied by XRD and residual stress measurement using TZP specimens containing 2.0 mol% Y 2 O 3 that had undergone mechanical and thermal treatments and compressive stress. The observed domain switching was due to a preferred transformation of the tetragonal phase caused by compressive stress above 70 MPa leading to a remnant c‐axis orientation normal to the compressive direction. Domain switching did not depend on thermal stress but arose directly from the tetragonal phase with little relation to monoclinic phase.