The conditions of detonation synthesis of nanodiamonds do not affect the size of diamond microcrystallites too much, as was shown in numerous experimental studies. This is because microcrystallites are formed almost instantly at the moment of explosive detonation, when conditions are created for crystallization of the diamond carbon phase. Further expansion of detonation products only leads to the creation and enlargement of particle agglomerates. The product of detonation synthesis is always a powder consisting of agglomerates of carbon particles of diamond and non-diamond phases with impurities. The size, density and specific surface area of the agglomerates can be different depending on the synthesis conditions. These product characteristics are of great importance for further technological applications. Meanwhile, the processes of agglomerate formation under conditions of expansion of detonation products have not yet been considered. In this paper, we theoretically consider this process. The dependences of the size and specific surface of carbon agglomerates on the conditions of detonation synthesis were obtained, and comparison with experimental data was made.

大量实验研究表明，纳米金刚石的爆轰合成条件不会过多地影响金刚石微晶的尺寸。这是因为微晶几乎在爆炸的瞬间形成，此时为金刚石碳相的结晶创造了条件。爆轰产物的进一步膨胀只会导致颗粒团聚体的产生和扩大。爆轰合成的产物总是由金刚石碳颗粒和带有杂质的非金刚石相的聚集体组成的粉末。附聚物的尺寸、密度和比表面积可以根据合成条件而不同。这些产品特性对于进一步的技术应用非常重要。同时，尚未考虑在爆轰产物膨胀条件下形成团块的过程。在本文中，我们从理论上考虑了这个过程。得到了碳团聚体尺寸和比表面积对爆轰合成条件的依赖关系，并与实验数据进行了比较。