Solution combustion synthesis of calcium zirconate, CaZrO{sub 3}, powders

Journal Article · Mon Mar 15 04:00:00 EDT 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.12.015· OSTI ID:21372510

Ianos, Robert ^[1]; Barvinschi, Paul ^[2]

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1. 'Politehnica' University of Timisoara, Faculty of Industrial Chemistry and Environmental Engineering, P-ta Victoriei No. 2, Timisoara 300006 (Romania)
2. West University of Timisoara, Faculty of Physics, Bd. Vasile Parvan No. 4, Timisoara 300223 (Romania)

Single-phase CaZrO{sub 3} powder was prepared by heating at 300 deg. C an aqueous solution of Ca(NO{sub 3}){sub 2}, ZrO(NO{sub 3}){sub 2} and beta-C{sub 3}H{sub 7}NO{sub 2} (molar ratio=3:3:4). TG-DTA analysis indicated that an intense exothermic reaction occurred at 255 deg. C, which lead to the formation of a voluminous white powder. No additional annealing was required, as pure crystalline CaZrO{sub 3} resulted directly from the combustion reaction. Although no advanced milling was performed, the specific surface area of the powder was 21.5 m{sup 2}/g. The average crystallite size of CaZrO{sub 3} was 23.9 nm. After sintering in air at 1400 deg. C for 2 h, the pellets - shaped by uniaxial pressing at 200 MPa - reached 95% of the theoretical density, had no open pores and were slightly translucent. - Graphical abstract: Single-phase CaZrO{sub 3} powder was prepared by low-temperature combustion synthesis. The resulting powder had a BET area of 21.5 m{sup 2}/g. After sintering at 1400 deg. C for 2 h 95% of the theoretical density was reached.

• OSTI ID: 21372510
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 3 Vol. 183; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
AQUEOUS SOLUTIONS
CALCIUM COMPOUNDS
CALCIUM NITRATES
CERAMICS
CHEMICAL REACTIONS
COMBUSTION
DIFFERENTIAL THERMAL ANALYSIS
DISPERSIONS
FABRICATION
HEAT TREATMENTS
HEATING
HOMOGENEOUS MIXTURES
MIXTURES
NITRATES
NITROGEN COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDERS
PRESSURE RANGE
PRESSURE RANGE MEGA PA
PRESSURE RANGE MEGA PA 100-1000
SINTERING
SOLUTIONS
SPECIFIC SURFACE AREA
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
THERMAL ANALYSIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
ZIRCONATES
ZIRCONIUM COMPOUNDS
ZIRCONIUM NITRATES