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Phase Equilibria in the System ZrO 2 ─InO 1.5
Author(s) -
Sasaki Kazunari,
Bohac Petr,
Gauckler Ludwig J.
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.tb03661.x
Subject(s) - eutectic system , phase (matter) , solid solution , solubility , materials science , metastability , ionic radius , supersaturation , diffusionless transformation , decomposition , solid solubility , analytical chemistry (journal) , ion , crystallography , thermodynamics , chemistry , martensite , alloy , metallurgy , chromatography , microstructure , organic chemistry , physics
Phase equilibria in the system ZrO 2 ─InO 1.5 have been investigated in the temperature range from 800° to 1700°C Up to 4 mol%, InO 1.5 is soluble in t ‐ZrO 2 at 1500°C. The martensitic transformation temperature m → t of ZrO 2 containing InO 1.5 is compared with that of ZrO 2 solid solutions with various other trivalent ions with different ionic radii. The diffusionless c → t ′ A phase transformation is discussed. Extended solid solubility from 12.4 ± 0.8 to 56.5 ± 3 mol% InO 1.5 is found at 1700°C in the cubic ZrO 2 phase. The eutectoid composition and temperature for the decomposition of c ‐ZrO 2 solid solution into t ‐ZrO 2 +InO 1.5 solid solutions were determined. A maximum of about 1 mol% ZrO 2 is soluble in bcc InO 1.5 phase. Metastable supersaturation of ZrO 2 in bcc InO 1.5 and conditions for phase separation are discussed.