中、低角区煤的X射线衍射特点初探

THE X-RAY SCATTERING INVESTIGATION OF COALS AT MIDDLE AND LOW ANGLFS

本文首次较为系统地研究了不同变质程度的煤，在低角区和中角区的Ｘ射线衍射特点。指出随着变质程度的提高，１６×１０－（１０）ｍ峰和（００２）峰强度逐渐增高，而γ带强度降低，低变质煤未见１６×１０－（１０）ｍ峰，高变质煤中γ带不明显；随着变质程度提高，１６×１０－（１０）ｍ峰、γ带峰、（００２）峰的晶面间距均减小，１６×１０－（１０）ｍ峰减小幅度较大，（００２）峰减小幅度较少。基于以上分析，对其形成机理进行了初步探讨。图６，参７。

Based on the samples of different metamorphic types of coals,the authors had made an X-ray scattering investigation of coals at middle and low angles. The results show that the intensities of the (002) peak and the 16×10-10m peak were increased,but the γ belt decreased,as the raise of metamorphic degree of coals;and that the interlayer distances of the 16×10-10m peak,the γ belt and the (002) peak were all decreased as the raise of metamorphic degree of coals. Based upon it,the forming mechanism was suggested.6figs.,7refs.