Preparation of Fine Titanium Nitride Powders from Titanium Trichloride

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J. Korean Ceram. Soc. > Volume 27(7); 1990 > Article

Journal of the Korean Ceramic Society 1990;27(7): 916.

염화티타늄(III)으로부터 질화티타늄 미분체의 합성

이진호, 장윤식, 박홍채, 오기동

부산대학교 무기재료공학과

Preparation of Fine Titanium Nitride Powders from Titanium Trichloride

ABSTRACT

The preparatin of the fine TiN powders by reduction-nitridation of TiCl3-Al-N2 system was attempted in the temperature range from 350$^{circ}$to 100$0^{circ}C$. The formation mechanism and kinetics of TiN were examined, and the resultant TiN powder was characterized by means of XRD, PSA and SEM-EPMA methods. TiN was formed at temperatrue higher than $600^{circ}C$. As an intermediate phase, AlTi was obtained. The apparent activation energy for the formation of TiN was approximately 4.2kcal/mole(600$^{circ}$~90$0^{circ}C$). The crystallite size and lattice constnat of TiN powder obtained in the temperature range from 600$^{circ}$to 100$0^{circ}C$ for 2h at the Al/TiCl3 molar ratio of 1.0 were 160~255A and 4.231~4.239A, respectively. According to PSA measurement, the mean particle size ranged from 14.0 to 14.8${mu}{textrm}{m}$.