首页|Effect of Silica Coating on the Thermal Stability of Tantalum Based Nitrides Pigments
Effect of Silica Coating on the Thermal Stability of Tantalum Based Nitrides Pigments
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Trans Tech Publications Ltd
The colored TaON and Ta_3N_5 were synthesized by ammonolysis of amorphous Ta(OH)_5 in the temperature range of 800-1000℃. Ta(OH)_5 were prepared by titration process from TaCl_5. TaON were synthesized at 900℃ for 2 hr, and Ta_3N_5 were synthesized at 1000℃ for 5 hr. In general, Ta_3N_5 powders were easily oxidized at 500℃ with changing colority from red to white. To minimize the oxidation problem of Ta_3N_5 powders, we proposed silica coated system using TEOS and APTES as a surfactant. Tonality of silica coated Ta_3N_5 has very little changing which means silica coating actually minimizes the oxidation of the Ta_3N_5 particles.
pigmentnitridationTa_3N_5silica coating
Jong-Chul Park、Jae-Hwan Pee、YooJin Kim、Woo-Seok Cho
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595-7 Sukwang-li, Sindun-myeon, Icheon-si, Gyeonggi-do, 467-843, KICET, Korea
NETL
NSTL
Trans Tech Publications Ltd
