2008 年 116 巻 1358 号 p. 1154-1158
The carbothermal reduction of TiO was investigated and compared with that of TiO2 using a thermodynamic approach and experiments. Cubic-TiO powder was synthesized using a high-energy mill to understand the reduction and carburization process. During the reduction and carburization process, TiO is found to be changed into TiC and Ti2O3 simultaneously at low temperatures. This change is ascribed to the low thermodynamic stability of TiO compared with that of Ti2O3. The instability of TiO is found to result in a higher driving force for the carburization of TiO to TiC than that for relatively stable Ti2O3.