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Preparation of Monodisperse and Spherical Zirconia Powders by Heating of Alcohol–Aqueous Salt Solutions
Author(s) -
Moon Young Tae,
Park Hong Kyu,
Kim Do Kyung,
Kim Chong Hee,
Seog InSig
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.tb08042.x
Subject(s) - calcination , materials science , monoclinic crystal system , particle size , chemical engineering , tetragonal crystal system , aqueous solution , phase (matter) , cubic zirconia , solvent , dispersity , precipitation , particle (ecology) , mineralogy , inorganic chemistry , chemistry , ceramic , organic chemistry , composite material , polymer chemistry , crystal structure , physics , oceanography , geology , meteorology , engineering , catalysis
A novel method is demonstrated which yields a spherical ZrO 2 powder of narrow size distribution through heating of a zirconyl chloride solution with an alcohol–water mixture as the solvent. The kind and composition of the solvent mixture greatly influenced the behavior of the precipitation and the morphology of the resulting particles. When 1‐propanol or 2‐propanol was employed as the alcohol of the solvent mixture, the resulting particles had a spherical shape and a narrow size distribution. The particle size and the particle agglomeration level could be controlled by the amount of hydroxypropyl cellulose (HPC) in the solution. As‐prepared amorphous powder was crystallized to a mixture of metastable tetragonal phase and monoclinic phase at about 460°C. The metastable tetragonal phase was converted to the monoclinic phase as the calcination temperature was increased. After calcination, the spherical shape of the zirconia powder was retained, while its particle size was decreased slightly.