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《Journal of Gansu Sciences》 2008-03
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The Thermodynamic Calculation and Analysis of Self-propagating High-temperature Synthesis TiC-Al

HE Zu-ming1,2,FENG Wang-jun1,2,XIA Yong-mei1,2,YANG Hua1,2(1.State Key Laboratory of New Non-ferrous Metal Materials,Lanzhou 730050,China; 2.School of Sciences,Lanzhou University of Science and Technology,Lanzhou 730050,China)  
According to the thermodynamic principles,the Al-Ti-C system is thermodynamically calculated.We have drawn the curves of standard free enthalpy with temperature changes,the curves of adiabatic temperature with Al content changes and the curves of adiabatic temperature with preheating temperature.The analytic result shows:the main reaction formula of the three element system is Ti+C=TiC.When Al content of the system is increased,the adiabatic temperature of the system will descend.If preheating temperature is 650K,the optimal theoretical Al content is 57.5%.When the preheating temperature goes up,the adiabatic temperature of the system will go up.When the Al content is too high and the adiabatic temperature of the system is under 1 800K,the heightening preheating temperature can make it sure that the reaction is spontaneous.
【Fund】: 甘肃省有色金属新材料国家重点实验室(SKL05009)
【CateGory Index】: TG111.3
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