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Reduced Unit Cell Determination From Unindexed EBSD Patterns

Published online by Cambridge University Press:  02 July 2020

J. R. Michael  and
R. P. Goehner
J. R. Michael
Affiliation:
Materials Characterization Dept., Sandia National Laboratories, Albuquerque, NM87185-1405
R. P. Goehner
Affiliation:
Materials Characterization Dept., Sandia National Laboratories, Albuquerque, NM87185-1405
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Extract

Electron backscatter diffraction (EBSD) is a technique that can provide identification of unknown crystalline phases while exploiting the excellent imaging capabilities of the scanning electron microscope (SEM). Phase identification using EBSD has now progressed to the point that it is commercially available. Phase identification in the SEM requires high quality EBSD patterns that can only be collected using either film or charge coupled device (CCD)-based cameras. High quality EBSD patterns obtained in this manner show many diffraction features that are useful in the determination of the unit cell of the sample.’ This paper will discuss the features in the EBSD patterns and the procedure used to determine the reduced unit cell of the sample.

One of the major advantages of EBSD over electron diffraction in the transmission electron microscope is the remarkable field of view that is routinely attained. The large angular view of the diffraction pattern permits many zone axes and their associated symmetries to be viewed in a single pattern or at most a few patterns.

Type
Advances in the Instrumentation and Application of Electron Backscatter Diffraction in the SEM
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 946 - 947
Copyright
Copyright © Microscopy Society of America

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References

References:

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5. The author gratefully Alwyn Eades of Lehigh University for helpful discussions. This work was supported by the United States Department of Energy under Contract DE-AC04-94AL85000. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy.Google Scholar