【作者】 张伟斌； 杨仍才； 杨雪海； 田勇； 雍炼；

【Author】 ZHANG Wei-bin;YANG Reng-cai;YANG Xue-hai;TIAN Yong;YONG Lian;Institute of Chemical Materials,CAEP;

【机构】 中国工程物理研究院化工材料研究所；

【摘要】 利用X射线微层析成像技术研究了TATB造型颗粒经温等静压软模成形圆柱样品的三维结构信息,CT图像显示颗粒经过压实仍保留完整,典型形态呈多边体;压实颗粒间有高密度薄层,未发现残余孔隙、微裂纹;颗粒接触数最大达到12;颗粒尺寸轴向分布保持不变,径向靠近样品轴心的较大尺寸颗粒体积分数偏大等现象。结果说明温等静压软模成形的炸药颗粒形态及其微细结构排列趋向各向同性,但径向仍存在沿轴心方向的压力降。更多还原

【Abstract】 X-ray microtomography(X-μCT) has been applied to obtain the complete three-dimensional(3D) recordings of PBX under isostatic warm soft compaction based on TATB granules at ten-micrometre resolution. X-μCT pictures show that the TATB granules are preserved by softening and compaction with multilateral body morphological features, there are high density interface layers between compacted granules, there are not found residual pores and fine cracks, the max contact number between compacted granules reaches 12, the axial size distribution of compacted granules keeps the same, and the sizes of compacted granules close to the axis are larger than to the mould as a whole scale. The results indicate that the compacted granules morphology and structure arrangement tend to be isotropic, and the pressure reduces along the radial direction.更多还原