Calcination and Sintering Study of Thoria

Journal Article · Fri Jun 01 04:00:00 EDT 1962 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1962.tb11139.x· OSTI ID:4828952

HARADA, Y.; BASKIN, Y.; HANDWERK, J. H.

Data on the effect of calcination temperature on surface area, apparent crystallite size, compactibility, sintered density, and volume shrinkage are presented for thoria prepared from the oxycarbonate, chloride, nitrate, and oxalate. Surface area and volume shrinkage decreased with rising calcination temperature. Thoria obtained from the oxycarbonate exhibited the greatest sinterability; material derived from the nitrate showed tae least. Maximum bulk densities were achieved using material resulting from the calcination of the oxycarbonate between 600 and 1000 deg C. Densities of 95 to 98% of the theoretical value of thoria were attained by compacting these powders at pressures above 20 tsi and firing at 1500 deg C for 24 hours. Uraniathoria solid solutions incorporating thoria obtained by cal cination of the chloride exhibited the highest fired densities. (auth)

• Research Organization: Argonne National Lab., Ill.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-020529
• OSTI ID: 4828952
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 6 Vol. 45; ISSN 0002-7820
• Publisher: American Ceramic Society
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CALCINATION
CARBONATES
CHEMISTRY
CHLORIDES
COMPACTING
DEFORMATION
DENSITY
GRAIN SIZE
NITRATES
OXALATES
PYROLYSIS
SHRINKAGE
SINTERING
SOLID SOLUTIONS
TEMPERATURE
THORIUM OXIDES
URANIUM OXIDES
VOLUME