物理学报2011，Vol.60Issue(11)：265-270,6.
同步辐射K边减影成像及其在多孔金属材料中的应用
Synchrotron K-edge subtraction imaging and its application to metallic foams
摘要
Abstract
On the basis of sudden change of linear absorption coefficient （LACs） in the vicinity of absorption edge,the synchrotron K-edge subtraction technique is developed to label the three-dimensional （3D） distribution of element.In this work,tomographic scans above and below the specific absorption edge of Zn are carried out and the subtracted image is used to identify and quantify the 3D distribution of Zn element inside the cell wall of Al-Zn-Mg foam.A non-uniform spatial distribution of Zn element is found in the cell wall of as-cast foam.After long solution tratment,the concentration of Zn element tended to be homogeneous.It is confirmed that the local agglomerated Zn-bearing particles exerta negative influence on the brittle cracking of the cell wall.The K-edge subtraction technique provides a powerful tool for the quantitative microstructure characterization of three-dimensional tissues.关键词
同步辐射/K边减影成像/元素分布/三维表征Key words
synchrotron radiation/K-edge subtraction imaging/element distribution/three-dimensional characterization分类
通用工业技术引用本文复制引用
张强,户田裕之..同步辐射K边减影成像及其在多孔金属材料中的应用[J].物理学报,2011,60(11):265-270,6.基金项目
国家自然科学基金 （）
日本同步辐射设施JASRI项目（批准号：2008B1147和2009B1374）资助的课题 （）
