期刊
出版社
ROYAL SOC
DOI: 10.1098/rspa.2013.0629
关键词
energy-dispersive X-ray diffraction; X-ray imaging; computed tomography; materials characterization
资金
- EPSRC [EP/H046577/1, EP/F007906/1, EP/I02249X/1]
- Engineering and Physical Sciences Research Council [EP/H046577/1, EP/I02249X/1, EP/F007906/1] Funding Source: researchfish
- EPSRC [EP/F007906/1, EP/I02249X/1, EP/H046577/1] Funding Source: UKRI
In recent times, there has been a drive to develop non-destructive X-ray imaging techniques that provide chemical or physical insight. To date, these methods have generally been limited; either requiring raster scanning of pencil beams, using narrow bandwidth radiation and/or limited to small samples. We have developed a novel full-field radiographic imaging technique that enables the entire physio-chemical state of an object to be imaged in a single snapshot. The method is sensitive to emitted and scattered radiation, using a spectral imaging detector and polychromatic hard X-radiation, making it particularly useful for studying large dense samples for materials science and engineering applications. The method and its extension to three-dimensional imaging is validated with a series of test objects and demonstrated to directly image the crystallographic preferred orientation and formed precipitates across an aluminium alloy friction stir weld section.
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