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Characterization of composition and structure of clay minerals in sandstone with ptychographic X-ray nanotomography

机译：X射线谱图分析表征砂岩中粘土矿物的组成和结构

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摘要

Three-dimensional analysis of microporous and fine-grained particles in natural stone is important for understanding their internal fluid flow processes and to allow their internal dynamics to be modeled. These processes are of great interest in oil, gas and groundwater studies, as well as for the weathering of natural building materials. For features above 1 mu m methods such as X-ray micro-computed tomography (mu-CT) can provide non-destructive, quantitative analysis. Non-destructive 3D imaging at resolutions below 300-400 nm, however, has remained a challenge until recent developments at synchrotron beam lines. In this paper we visualize the microstructure of clay mineral samples extracted from two different sandstones at 3D spatial resolutions down to 45 nm, using ptychographic X-ray computed tomography (PXCT). Furthermore, the relative humidity of the environment during these experiments was controlled in order to assess its influence on the analyzed samples. Based on these high-quality images, we were able to acquire non-destructively quantitative 3D information on mineral content and distribution, porosity and connectivity of clay mineral clusters inside sandstone. (C) 2015 Elsevier B.V. All rights reserved.
机译：对天然石材中的微孔和细颗粒进行三维分析对于理解其内部流体流动过程以及对其内部动力学进行建模非常重要。这些过程在石油，天然气和地下水研究以及天然建筑材料的风化研究中非常感兴趣。对于1微米以上的特征，诸如X射线微计算机断层扫描（mu-CT）之类的方法可以提供无损的定量分析。然而，直到同步加速器光束线的最新发展，分辨率低于300-400 nm的无损3D成像仍然是一个挑战。在本文中，我们使用谱图X射线计算机断层扫描（PXCT），以低至45 nm的3D空间分辨率可视化了从两种不同砂岩中提取的粘土矿物样品的微观结构。此外，在这些实验中控制环境的相对湿度，以评估其对所分析样品的影响。基于这些高质量的图像，我们能够获得有关砂岩内部粘土矿物簇的矿物含量和分布，孔隙度和连通性的无损定量3D信息。 （C）2015 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Applied clay science》 |2015年第12期|258-264|共7页
  • 作者

    De Boever Wesley; Diaz Ana; Derluyn Hannelore; De Kock Tim; Van Stappen Jeroen; Dewanckele Jan; Bultreys Tom; Boone Matthieu; De Schryver Thomas; Skjonsfjell Eirik T. B.; Holler Mirko; Breiby Dag W.; Cnudde Veerle;

  • 作者单位

    Univ Ghent, Dept Geol & Soil Sci, UGCT, PProGRess, B-9000 Ghent, Belgium;

    Paul Scherrer Inst, Villigen, Switzerland;

    Univ Ghent, Dept Geol & Soil Sci, UGCT, PProGRess, B-9000 Ghent, Belgium;

    Univ Ghent, Dept Geol & Soil Sci, UGCT, PProGRess, B-9000 Ghent, Belgium;

    Univ Ghent, Dept Geol & Soil Sci, UGCT, PProGRess, B-9000 Ghent, Belgium;

    Univ Ghent, Dept Geol & Soil Sci, UGCT, PProGRess, B-9000 Ghent, Belgium;

    Univ Ghent, Dept Geol & Soil Sci, UGCT, PProGRess, B-9000 Ghent, Belgium;

    Univ Ghent, Dept Phys & Astron, UGCT, Radiat Phys Grp, B-9000 Ghent, Belgium;

    Univ Ghent, Dept Phys & Astron, UGCT, Radiat Phys Grp, B-9000 Ghent, Belgium;

    Norwegian Univ Sci & Technol, Dept Phys, Oslo, Norway;

    Paul Scherrer Inst, Villigen, Switzerland;

    Norwegian Univ Sci & Technol, Dept Phys, Oslo, Norway;

    Univ Ghent, Dept Geol & Soil Sci, UGCT, PProGRess, B-9000 Ghent, Belgium;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ptychography; cSAXS; Microstructure; Tomography; Behavior; Nanotomography;

    机译：气相色谱;cSAXS;微观结构;层析成像;行为;纳米层析;

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