Data-fusion of high resolution X-ray CT, SEM and EDS for 3D and pseudo-3D chemical and structural characterization of sandstone

作者：De Boever Wesley^*; Derluyn Hannelore; Van Loo Denis; Van Hoorebeke Luc; Cnudde Veerle

来源：Micron, 2015, 74: 15-21.

DOI：10.1016/j.micron.2015.04.003

• X-ray tomography
• mu-CT
• Scanning electron microscopy
• Energy-dispersive spectroscopy
• Data fusion

When dealing with the characterization of the structure and composition of natural stones, problems of representativeness and choice of analysis technique almost always occur. Since feature-sizes are typically spread over the nanometer to centimeter range, there is never one single technique that allows a rapid and complete characterization. Over the last few decades, high resolution X-ray CT (mu-CT) has become an invaluable tool for the 3D characterization of many materials, including natural stones. This technique has many important advantages, but there are also some limitations, including a tradeoff between resolution and sample size and a lack of chemical information. For geologists, this chemical information is of importance for the determination of minerals inside samples. We suggest a workflow for the complete chemical and structural characterization of a representative volume of a heterogeneous geological material. This workflow consists of combining information derived from CT scans at different spatial resolutions with information from scanning electron microscopy and energy-dispersive X-ray spectroscopy.

• 出版日期2015-7