Application of Electron Backscatter Diffraction to Phase Identification

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The identification of crystalline phases in solids requires knowledge of two microstructural properties: crystallographic structure and chemical composition. Traditionally, this has been accomplished using X-ray diffraction techniques where the measured crystallographic information, in combination with separate chemical composition measurements for specimens of unknown pedigrees, is used to deduce the unknown phases. With the latest microstructural analysis tools for scanning electron microscopes, both the crystallography and composition can be determined in a single analysis utilizing electron backscatter diffraction and energy dispersive spectroscopy, respectively. In this chapter, we discuss the approach required to perform these experiments, elucidate the benefits and limitations of ... continued below

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PDF-file: 31 pages; size: 1.5 Mbytes

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El-Dasher, B S & Deal, A July 16, 2008.

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Description

The identification of crystalline phases in solids requires knowledge of two microstructural properties: crystallographic structure and chemical composition. Traditionally, this has been accomplished using X-ray diffraction techniques where the measured crystallographic information, in combination with separate chemical composition measurements for specimens of unknown pedigrees, is used to deduce the unknown phases. With the latest microstructural analysis tools for scanning electron microscopes, both the crystallography and composition can be determined in a single analysis utilizing electron backscatter diffraction and energy dispersive spectroscopy, respectively. In this chapter, we discuss the approach required to perform these experiments, elucidate the benefits and limitations of this technique, and detail via case studies how composition, crystallography, and diffraction contrast can be used as phase discriminators.

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PDF-file: 31 pages; size: 1.5 Mbytes

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  • Report No.: LLNL-BOOK-405555
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 989334
  • Archival Resource Key: ark:/67531/metadc1012145

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 16, 2008

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 20, 2017, 1 p.m.

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El-Dasher, B S & Deal, A. Application of Electron Backscatter Diffraction to Phase Identification, book, July 16, 2008; (digital.library.unt.edu/ark:/67531/metadc1012145/: accessed December 11, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.