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Zirconia Gels in Concentrated NaOH
Author(s) -
Pavlik Robert S.,
Klein Lisa C.,
McCauley Ronald A.
Publication year - 1995
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.1151-2916.1995.tb08388.x
Subject(s) - cubic zirconia , zirconium , monoclinic crystal system , materials science , phase (matter) , tetragonal crystal system , fraction (chemistry) , mass fraction , chemical engineering , hydrolysis , nuclear chemistry , mineralogy , composite material , chemistry , chromatography , metallurgy , organic chemistry , ceramic , crystal structure , engineering
The sol‐gel process was used to produce zirconia powders that were pressed into compacts. The powders were synthesized from zirconium n‐propoxide, diluted in propanol, and hydrolyzed with molar ratios of water either l‐to‐l or lo‐to‐l. Zirconia compacts produced in this manner were soaked in 1N NaOH to simulate a membrane cleaning process, and their weight loss was recorded. Zirconia samples with a higher weight fraction of tetragonal phase exhibited less weight loss than samples with more monoclinic phase. The weight fraction of the tetragonal phase was controlled by synthesis conditions and tiring temperature.