【摘要】 用单峰付氏分析法给出的ＰＡＮ基炭纤维的微观结构参数Ｌａ、Ｌｃ的准确数值比用Ｓｃｈｅｒｒｅｒ公式计算的结果偏大，并且随着热处理温度的提高这种趋势更加明显。实验中观察到乱层结构层面间距ｄ（００２），六角碳网面上的Ｃ－Ｃ键距ａ及晶格畸变〈ε_ｃ~２〉、〈ε_ｃ~２〉与微晶尺寸Ｌａ、Ｌｃ之间均存在规律性的对应关系，对于产生这种现象的内在原因进行了初步讨论。更多还原

【Abstract】 The values of microskystallite dimensions,La and Lc,given by analysis of the line shape of one diffraction peak are greater than those of microsrystallite dimensions calculated by Scherrer’s formula,and the deviation is more obvious with increased heat-treatment temperature.Interlayer spacing(d002) of turbostatic structure .C-C bond length(a) on hexagonal carbon layer and lattice distortions(〈ε_A￣2〉、〈ε_c￣2〉) change regularly with increasing of La,Lc,and a preliminary discussion on the phenomenon is made.更多还原