对石墨进行机械球磨处理,并用Ｘ射线、拉曼散射和高分辩电子显微镜对其结构进行了研究．经过１５０ｈ球磨后,石墨原有的晶体结构被破坏．引入多种缺陷的同时,石墨层发生了剥离和卷曲,形成了多边形粒子和纳米弓形等具有高度弯曲石墨面的纳米结构．经过２５０ｈ球磨后,石墨层状结构完全断裂和破坏;形成了由纳米级的基本结构单元(ＢＳＵ)组成的多孔碳．经过３０００℃热处理后,这种多孔碳并不能恢复成石墨组织结构． Graphite was mechanically ball-milled and its structure was studied by X-ray diffraction, Raman scattering and high-resolution electron microscopy. After 150h ball milling, graphite original crystal structure is destroyed. The introduction of a variety of defects at the same time, the graphite layer peeling and curling occurred, the formation of polygonal particles and nano-arches and other highly curved graphite surface of the nano-structure. After 250h ball milling, the graphite layered structure completely ruptures and destroys; a porous carbon composed of nano-sized basic structural units (BSU) is formed. After 3000 ℃ heat treatment, this porous carbon can not be restored into graphite structure.