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采用燃烧合成法合成了绝热温度为１８００Ｋ的ＴｉＳｉ２。分析了毛坯直径和初始孔隙率、Ｔｉ颗粒及预热温度对燃烧合成的影响，证实满足Φ＝９２ｍｍ，ρ＝５２％的－３００目钛粉形成的毛坯在常温才能发生自蔓延反应。利用燃烧波前沿熄淬法（ＣＦＱ）研究了ＴｉＳｉ２形成机制。当Ｔ≤ｌ３３０℃时ＴｉＳｉ２通过扩散反应机制进行；当Ｔ＞１３３０℃时，ＴｉＳｉ２反应机制则是溶解－沉淀析出。分别利用ＸＲＤ和ＳＥＭ分析了产物及其过渡区相变的微观组织变化。
TiSi2 with an adiabatic temperature of 1800K was synthesized by combustion synthesis method. The effects of blank diameter and initial porosity, Ti particles and preheating temperature on the combustion synthesis were analyzed. It was confirmed that the self-propagating reaction occurred at -300 mesh titanium powder with Φ = 92mm and ρ = 52%. The formation mechanism of TiSi2 was studied by using the combustion front quenching method (CFQ). When T≤l330 ℃ TiSi2 diffusion reaction mechanism; when T> 1330 ℃, TiSi2 reaction mechanism is dissolution - precipitation. The changes of the microstructure of the product and its transition zone were analyzed by XRD and SEM respectively.