金刚石合成中的成核问题

本文基于溶剂-催化剂作用下金刚石合成中的胶体观点和结构转化模型,提出了作为金刚石结晶基元的双层椅子形网面组的相互聚结是金刚石成核的主要方式的观点。由实验得到金刚石成核数与温度的定性关系曲线以及金刚石成核与压力的关系,并据此讨论了所述成核理论对金刚石合成实践的指导作用。 关键词：

ON THE NUCLEATION OF SYNTHETIC DIAMOND

Based on the colloid aspects and the model of the structure transformations in diamond synthesis under the action of a solvent-catalyst, it is suggested that the coalescence of the puckered dimers of diamond as crystallized units is the main way of diamond nucleation. From experiments, a curve representing the qualitative relationship between the number of diamond nuclei and the temperature as well as the relationship between the diamond nucleation and the pressure are obtained. The roles of the above mentioned nucleation mechanism on directing the practice of diamond synthesis are discussed.