Effect of Temperature on the Synthesis of ZrO2-Mullite Powders in Molten Sodium Sulfate

Abstract:

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ZrO2-mullite compound powders were synthesized with zircon and aluminum sulfate in molten sodium sulfate. Na2ZrSiO5 was prepared as intermediate with zircon and sodium carbonate at 900°C for 3h. Then the mixture of resultant Na2ZrSiO5 and aluminum sulfate was heated at different temperatures in molten sodium sulfate salt. The ZrO2-Al2O3-SiO2 compound powders were obtained after washing away the solvable salts. The results showed that the compound powders synthesized at 800°C were tetragonal ZrO2, SiO2 and Al2O3; the powders synthesized at 1000°C were monoclinal ZrO2 and mullite. The mullite in compound powders became to decompose when the reaction temperature increased over 1100°C.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

765-767

DOI:

10.4028/www.scientific.net/KEM.368-372.765

Citation:

B. Q. Zhu et al., "Effect of Temperature on the Synthesis of ZrO2-Mullite Powders in Molten Sodium Sulfate", Key Engineering Materials, Vols. 368-372, pp. 765-767, 2008

Online since:

February 2008

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Price:

$35.00

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