Paper Title:
Effect of Silica Coating on the Thermal Stability of Tantalum Based Nitrides Pigments
  Abstract

The colored TaON and Ta3N5 were synthesized by ammonolysis of amorphous Ta(OH)5 in the temperature range of 800-1000°C. Ta(OH)5 were prepared by titration process from TaCl5. TaON were synthesized at 900°C for 2 hr, and Ta3N5 were synthesized at 1000°C for 5 hr. In general, Ta3N5 powders were easily oxidized at 500°C with changing colority from red to white. To minimize the oxidation problem of Ta3N5 powders, we proposed silica coated system using TEOS and APTES as a surfactant. Tonality of silica coated Ta3N5 has very little changing which means silica coating actually minimizes the oxidation of the Ta3N5 particles.

  Info
Periodical
Key Engineering Materials (Volumes 434-435)
Edited by
Wei Pan and Jianghong Gong
Pages
134-137
DOI
10.4028/www.scientific.net/KEM.434-435.134
Citation
J. C. Park, J. H. Pee, Y. J. Kim, W. S. Cho, "Effect of Silica Coating on the Thermal Stability of Tantalum Based Nitrides Pigments", Key Engineering Materials, Vols. 434-435, pp. 134-137, 2010
Online since
March 2010
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Price
$32.00
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