Preparation of monodisperse ZrO{sub 2} by the microwave heating of zirconyl chloride solutions

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1995.tb08448.x· OSTI ID:82608

Moon, Y T; Kim, D K; Kim, C H ^[1]

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1. Korea Advanced Inst. of Science and Technology, Taejon (Korea, Republic of). Dept. of Ceramic Science and Engineering

Based on the principle that the solubility of a salt decreases as the dielectric constant of the solvent decreases, zirconia powders were prepared by heating a zirconyl chloride solution with a 2-PrOH-water mixture as the solvent. The morphology, size, and size distribution of the resulting particles were highly sensitive to the heating method used on the starting solution. Particles formed under conventional heating methods were polydisperse. agglomerated spherical, or irregularly shaped because of inhomogeneous precipitation through the temperature gradient, the shear force induced by stirring, compositional nonuniformity, and the low heating rate. The present study demonstrated that microwaves provide an excellent means of heating uniformly and rapidly without stirring. The particles resulting from microwave treatment were monodisperse and spherical, with a mean diameter of 0.28 {micro}m.

• Sponsoring Organization: USDOE
• OSTI ID: 82608
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 4 Vol. 78; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MICROWAVE HEATING
MORPHOLOGY
PARTICULATES
POWDERS
PRECIPITATION
SOLUTIONS
SPHERES
SYNTHESIS
ZIRCONIUM CHLORIDES
ZIRCONIUM OXIDES