基于电场燃烧合成三种典型放热体系的研究

Study on the Combustion Synthesis Based on Electric Field of Three Type of Radiative Systems

研究电场作用下,电流强度1.5×104A,Fe-Ti-C、Fe-V-C和W-C-Co3种典型放热体系电场燃烧合成产物的特征。通过试样在加热升温过程中反映出的曲线特点,结合对产物的X射线衍射分析(XRD)以及扫描电镜(SEM)等的分析,得到的结果表明:在本研究条件下,放热量对体系反应有较为显著的影响,随着体系放热量的减少,点火温度升高。点火延迟时间增长,而产物中易出现中间相或不稳定相。

In this paper, the character of combustion synthesis products which were obtained by Fe-Ti-C, Fe-V-C and W-C -Co system under 1.5 × 10^4 A electric current was studied. A series of research was taken, such as the curve character of the heating process, and the analysis of product by X-ray diffraction （XRD） and scanning electron microscope （SEM）. The results show that under the same electric current, the calorific capacity have important influence on the action, i.e. the ignition temperature and the ignition delay time is increased along with the decreasing of the sample＇s calorific capacity, and thus the intermediate phase or unstable phase appears in the production easily.