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一、前言 为了研究碳素材料石墨化时性能的变化和决定最佳的温度规范,有两个理论问题要加以探讨:一是热力学的,即在一定的外部条件下,物料体系中的热力学平衡状态;二是动力学的,即碳素在热处理过程中石墨化的速度。 这就需要测定碳素材料在不同温度下的热容,它们的燃烧热和一定温度下的氧化速度,作为计算石墨化热力学函数的依据,还要测定材料石墨化前后性能的变化,如电导
I. Preface In order to study the change of properties when graphitizing carbon materials and to determine the best temperature specifications, there are two theoretical issues to be explored: one is thermodynamics, that is, under certain external conditions, the thermodynamic equilibrium in the material system State; the second is kinetic, that is carbon in the heat treatment process of graphitization speed. This requires determining the heat capacity of carbon materials at different temperatures, their heat of combustion and the rate of oxidation at a certain temperature, as a basis for calculating the thermodynamic function of graphitization, and also determining the change in properties before and after graphitization of the material, such as conductance