ADVANCED MATERIALS & PROCESSES | JANUARY 2026 18 XRD act as a check and balance for each other. Conclusion. Phase identification was the main concern for this study aiming to infer the RF properties on the Moon. Terrestrial analogue material was sampled from the Nevada desert, and XRD and EBSD were employed to determine the mineralogical constituents. The minerals found in the samples were feldspars, quartz, mica, and a few other minor phases including magnetite and natrolite. These minerals were identified in the assortment of EBSD maps collected across the samples. The XRD results supported the feldspar, quartz, and mica phases, while the other phases were too limited in quantity to form significant peaks in the data. EBSD was vital in identifying minerals present in the samples, and XRD revealed the bulk characterization of those minerals within the samples. SIZE MATTERS The two case studies presented here show the value that EBSD and XRD data can provide individually, and the further elucidation that they can provide when the results are considered in concert. EBSD data are collected from relatively tiny areas within a sample and offer insight into the crystallographic orientations and mineralogical phases present within that sample area, making EBSD an important tool to characterize a material. XRD data encompasses a larger sample area and is therefore more indicative of the textures and phases found in the whole sample. A trace component may be shadowed by the signal from major components in an XRD scan but may be overrepresented in a very site-specific EBSD scan. Including both tools in the characterization of a material can help ensure phase constituents are not missed and that the bulk sample is represented among those constituents. ~AM&P For more information: Dr. Laura G. Wilson, aerospace research engineer, NASA Glenn Research Center, 21000 Brookpark Rd., Cleveland, OH 44135, 216.433.2768, laura.g.wilson@nasa.gov. References 1. D.J. Dingley, Diffraction from Submicron Areas using Electron Backscattering in a Scanning Electron Microscope, Scanning Electron Microscopy II, p 569-575, 1984. 2. B.D. Cullity, Elements of X-Ray Diffraction, Addison-Wesley Publishing Company, Boston, 1959. 3. T.P. Gabb, C.A. Kantzos, H.C. de Groh III, L.G. Wilson, R.B. Rogers, Q.G.N. Nguyen, and R.E. Martin, Effects of Oxide Dispersion on Failure Modes in an Additively Manufactured Superalloy, NASA/TM-20240001728, National Aeronautics and Space Administration Glenn Research Center, Cleveland, OH, March 2024. 4. A.T. McCartney, R.E. Martin, L.G. Wilson, and A. Chatterji, Mineralogical Characterization of Nevada Soil Samples, Unpublished, National Aeronautics and Space Administration Glenn Research Center, Cleveland, OH. 5. J. Lin and O.D. Sherby, Creep of Oxide Dispersion Strengthened Materials (with Special Reference to T.D. Nichrome), NASA CR-135432, Washington, D.C., 1978. 6. R.C. Benn, Alloy Development of Oxide Dispersion Strengthened High Volume γ’ Nickel-Base Superalloys Made by Mechanical Alloys, NADC78096-60, Naval Air Development Center, Washington, D.C., 1979. 7. T.M. Smith, A.C. Thompson, T.P. Gabb, C.L. Bowman, and C.A. Kantzos, Efficient Production of a HighPerformance Dispersion Strengthened, Multi-Principal Element Alloy, Scientific Reports, Vol 10, No. 1, p 9663-9672, 2020. 8. W.E. Frazier, Metal Additive Manufacturing: A Review, Journal of Materials Engineering and Performance, Vol 23, No. 6, p 1917-1928, 2014. 9. J.J. deBarbadillo and J.J. Fischer, Dispersion-Strengthened Nickel-Base and Iron-Base Alloys, Properties and Selection: Nonferrous Alloys and SpecialPurpose Material, Vol 2, ASM Handbook, p 943-949, 1990. 10. W.J. Sames, F.A. List, S. Pannala, R.R. Dehoff, and S.S. Babu, The Metallurgy and Processing Science of Metal Additive Manufacturing, International Materials Reviews, Vol 61, No. 5, p 315-360, 2016. To appear in the listings, visit AMPdirectory.com/addyourcompany Simplify Your Search for Vendors Find the right solutions for your business. Search for products, research companies, connect with suppliers, and make confident purchasing decisions all in one place. AMPdirectory.com
RkJQdWJsaXNoZXIy MTYyMzk3NQ==