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比较了Cu-Ti-C三元系中各种可能反应的标准吉布斯自由能,同时利用循环试算法计算了Cu-Ti-C反应体系的绝热温度和Cu的熔化率。结果表明:TiC为热力学最稳定产物,制备Cu/TiC在热力学上是可行的;随着Cu含量的增加,反应变得困难,自蔓延燃烧合成法不宜制备低TiC含量的材料;提高预热温度,反应变得容易;反应体系的绝热温度和Cu的熔化率都与预热温度有关。
The Gibbs free energies of various possible reactions in the Cu-Ti-C ternary system were compared. The adiabatic temperature and the melting rate of Cu in the Cu-Ti-C reaction system were calculated by the cyclic test method. The results show that TiC is the most thermodynamically stable product, and the preparation of Cu / TiC is thermodynamically feasible. With the increase of Cu content, the reaction becomes difficult, and it is not advisable to prepare low TiC content materials by self-propagating combustion synthesis method. , The reaction becomes easy; the adiabatic temperature of the reaction system and the melting rate of Cu are related to the preheating temperature.