【摘要】 研究了重力场作用下有液相生成的铝热剂的燃烧特性。研究了CaO ,CaF2 等添加剂以及预热温度对铝热剂燃烧温度和燃烧速率的影响。结果表明 ,在重力场作用下有液相生成的铝热剂的燃烧速率为反应产物熔体向未反应粉末中的渗透速率。提高预热温度可使燃烧温度升高 ,燃烧速率增大更多还原

【Abstract】 The combustion characteristics of the thermit in the presence of liquid phase in the field of gravitational forces were investigated. The effects of the additions such as CaO,CaF 2 on the combustion temperature and the combustion wave velocity were also investigated. It is found that the permeation velocity of molten reaction products to porous base is higher than that of the heat conductivity through the porous thermit. The combustion wave velocity is controlled by the permeation velocity. The combustion temperature and combustion wave velocity increases with increasing the preheating temperature.更多还原