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随着三维立体分析法的技术和分辨率在最近十年来得到了改进 ,现在有可能用三维数字空间对多相物料的微观结构进行详细描述。在这方面 ,三维X射线显微层析法提供了一套独特的成像能力。应用显微聚焦X射线发生器可以达到10 μm级的立体分辨率。最近 ,美国犹他大学安装了一套现代化的圆锥形X光束显微层析系统用于对多相物料进行三维空间的定量分析。该系统可以在直径 10mm的范围内得到 2 0 48× 2 0 48像素的图像 ,同时也可以得到某些较大物体( 40mm)的影像。该系统能够处理高密度的物料 ,密度可以达到 8 0 g/cm3。这个独特的仪器可以用于许多三维立体结构的成像 ,例如 ,三维解离度分析、过滤过程中床层微孔结构分析和混凝土结构中空气隙的测定。X射线显微层析系统不仅可以进行多相系统的定量分析 ,而且可以测定结构特性和相连续性。本文描述了这套新系统的最新应用情况 ,预测了这套先进的分析仪器的潜在应用领域
As the technology and resolution of three-dimensional analysis have been improved over the last decade, it is now possible to describe the microstructure of heterogeneous materials in detail using three-dimensional numerical space. In this respect, 3D X-ray micrographs provide a unique set of imaging capabilities. Applications Microfocus X-ray generators achieve up to 10 μm stereo resolution. Recently, the University of Utah installed a modern conical X-ray micro-chromatography system for the quantitative analysis of multiphase materials in three dimensions. The system can get 2048 × 2 048 pixel images in the range of 10mm in diameter, and can also get images of some larger objects (40mm) at the same time. The system is capable of handling high-density materials up to 80 g / cm3. This unique instrument can be used for the imaging of many three-dimensional structures such as three-dimensional resolution analysis, analysis of the bed’s microstructure during filtration and determination of the air gap in concrete structures. X-ray micro-chromatography system can not only quantitative analysis of multi-phase system, but also to determine the structural properties and continuity. This article describes the latest application of this new system and predicts the potential applications of this state-of-the-art analytical instrument