本文提出一个分形几何模型(Fractal geometry model)。用它描述固体粉末体系的结构特征,并在此基础上建立了单金属粉末体系烧结过程的动力学模型。以单分子反应为例,研究了与烧结有关的若干因素。将理论预测与已有实验进行比较,得到了较满意的结果。 This paper presents a fractal geometry model. It is used to describe the structural characteristics of the solid powder system, and on this basis, the kinetic model of the sintering process of the single metal powder system is established. Taking single molecule reaction as an example, several factors related to sintering were studied. The theoretical prediction is compared with the existing experiment, and the satisfactory result is obtained.