摘要
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 standard formation free energy of compounds in Cu-Ti-C ternary system were calculated at different temperature. The adiabatic temperatures and molten ratios of copper were obtained. The results reveal that TiC is more stable than the other compounds which maybe exists in this system; it is feasible to synthesize Cu/TiC composite by in-situ method. The reaction becomes more difficult with the increase of copper content, but easier with the increase of initial temperature, so it is hard to prepare Cu/TiC composite with low content of TiC. The adiabatic temperature and molten ratio of copper are related with the initial temperature.
出处
《热加工工艺》
CSCD
北大核心
2011年第16期84-86,共3页
Hot Working Technology
基金
国家自然学基金资助项目(5043202)
国家973基金资助项目(2007CB607603)
