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Neutron Methods Link Microstructure to Processing and Performance for Thermal Barrier Coatings



Andrew J. Allen


Although coatings are used in the electric utility and aircraft industries to protect advanced gas turbines from increasingly high operating temperatures, there is presently no single industrial technique that can quantify the component void microstructures that control thermal barrier coating performance and reliability. NIST researchers have developed advanced small-angle neutron and x-ray scattering methods which, with appropriate models, provide a microstructure characterization for thick, free-standing material. Two innovations now extend these studies to submillimeter-thick coatings in situ on the substrate, and suggest that such characterization can provide calibration and validation of the partial information available from other methods.
Journal of Research (NIST JRES) -
107 No. 1


Microstructure characterization, small angle neutron scattering, thermal barrier coatings


Allen, A. (2002), Neutron Methods Link Microstructure to Processing and Performance for Thermal Barrier Coatings, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD (Accessed July 17, 2024)


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Created January 1, 2002, Updated February 19, 2017