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Phase Transformation Introduced by Mechanical and Chemical Surface Preparations of Tetragonal Zirconia Polycrystals
Author(s) -
Mitra Nibedita,
Vijayan Kalyani,
Bai B. N. Pramila,
Biswas S. K.
Publication year - 1993
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.1151-2916.1993.tb03819.x
Subject(s) - tetragonal crystal system , materials science , monoclinic crystal system , indentation , cubic zirconia , diamond , phase (matter) , mineralogy , composite material , polishing , isotropic etching , metastability , etching (microfabrication) , crystallography , analytical chemistry (journal) , crystal structure , chemistry , ceramic , organic chemistry , layer (electronics) , chromatography
Cutting of Y 2 O 3 ‐doped TZP rods by a low‐speed diamond saw introduces an unidentified, metastable phase X (x ‐ZrO 2 ) coexisting with the tetragonal ( t ‐ZrO 2 ) and the monoclinic ( m ‐ZrO 2 ) phases initially present in the sample. Further mechanical deformation of the cut surface by indentation or polishing sustains the x ‐ZrO 2 . Chemical etching removes the x ‐ZrO 2 and increases the m ‐ZrO 2 content.