508 回折コントラストイメージを用いた結晶構造解析(OS5-2 回折法による材料評価)

概要

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The novel technique for non-destructive and simultaneous mapping of the three-dimensional grain and the absorption microsiructure of material was developed. This technique is formed X-ray diffraction contrast tomography, and it shares a common experimental setup with conventional X-ray absorption contrast tomography. The grain are imaged using the occasionally occurring diffraction contribution to the X-ray attenuation coefficient each time a grain fulfills the diffraction condition The three-dimensional grain shapes are reconstructed from a limited number of projections using an algebraic reconstruction technique. The crystallographic grain orientation can be determined from the sets of diffraction contrast image. The measurements of diffraction contrast were carried out in SPring-8, which is large synchrotron radiation facility in Japan. The conditions for measurement of diffraction contrast image were investigated and the potential of this technique were discussed in this paper.
一般社団法人日本機械学会の論文
2010-10-09