期刊
MATERIALS CHARACTERIZATION
卷 142, 期 -, 页码 422-431出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2018.06.001
关键词
Scanning electron microscopy; Electron imaging; Electron backscatter diffraction (EBSD); Energy dispersive spectroscopy (EDS)
类别
资金
- Imperial Innovations
- HEFCE
- Royal Academy of Engineering
Forescatter electron imaging is a popular microscopy technique, especially for scanning electron microscopes equipped with an electron backscatter diffraction detector. In principal, this method enables qualitative imaging of microstructure but quantitative assessment can be limited due to limited information about the contrast afforded. In this work, we explore forescatter electron imaging and demonstrate that imaging can be optimised for topographic, phase, and subtle orientation contrast imaging through appropriate sample and detector positioning. We demonstrate the relationship between imaging modes using systematic variation in detector positioning and compare this with pseudo-forescatter electron images, obtained from image analysis of diffraction patterns, to explore and confirm image contrast modes. We demonstrate these contrast mechanisms on a map obtained from a sample of the Gibeon meteorite.
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