Use of electropolishing for enhanced metallic specimen preparation for electron backscatter diffraction analysis

G. L. Wynick, C. J. Boehlert

    Research output: Contribution to journalArticle

    • 23 Citations

    Abstract

    The effects of mechanical polishing with Al2O3 and colloidal SiO2 followed by electropolishing were studied for preparation of metal alloy specimens for Electron Backscatter Diffraction (EBSD). The alloys studied were Inconel 718, a commonly used nickel-based superalloy, and a Ti-Al-Nb alloy (nominally Ti-22Al-28Nb(at.%)). Atomic Force Microscopy was used to measure the surface topography to attempt to correlate nano-scale surface roughness with EBSD pattern quality. The results suggest that mechanically polishing with Al2O3 followed by electropolishing for a short time can produce EBSD pattern confidence indices and image quality values that are equal to or better than those produced by mechanically polishing with colloidal SiO2 alone. The data suggests that surface roughness on the scale considered here has much less effect on EBSD pattern quality than had been previously believed. The data suggests that removing the surface damage is more critical than reduction of topography for EBSD.

    Original languageEnglish (US)
    Pages (from-to)190-202
    Number of pages13
    JournalMaterials Characterization
    Volume55
    Issue number3
    DOIs
    StatePublished - Sep 2005

    Profile

    electrons
    Electron diffraction
    electropolishing
    polishing
    diffraction patterns
    diffraction
    Electrolytic polishing
    Polishing
    Diffraction patterns
    Gramicidin
    Acculturation
    Fetal Distress
    topography
    surface roughness
    preparation
    Surface roughness
    Phobic Disorders
    Inconel (trademark)
    heat resistant alloys
    confidence

    Keywords

    • Alumina
    • Colloidal silica
    • EBSD
    • Electropolishing

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Use of electropolishing for enhanced metallic specimen preparation for electron backscatter diffraction analysis. / Wynick, G. L.; Boehlert, C. J.

    In: Materials Characterization, Vol. 55, No. 3, 09.2005, p. 190-202.

    Research output: Contribution to journalArticle

    Wynick, G. L.; Boehlert, C. J. / Use of electropolishing for enhanced metallic specimen preparation for electron backscatter diffraction analysis.

    In: Materials Characterization, Vol. 55, No. 3, 09.2005, p. 190-202.

    Research output: Contribution to journalArticle

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    abstract = "The effects of mechanical polishing with Al2O3 and colloidal SiO2 followed by electropolishing were studied for preparation of metal alloy specimens for Electron Backscatter Diffraction (EBSD). The alloys studied were Inconel 718, a commonly used nickel-based superalloy, and a Ti-Al-Nb alloy (nominally Ti-22Al-28Nb(at.%)). Atomic Force Microscopy was used to measure the surface topography to attempt to correlate nano-scale surface roughness with EBSD pattern quality. The results suggest that mechanically polishing with Al2O3 followed by electropolishing for a short time can produce EBSD pattern confidence indices and image quality values that are equal to or better than those produced by mechanically polishing with colloidal SiO2 alone. The data suggests that surface roughness on the scale considered here has much less effect on EBSD pattern quality than had been previously believed. The data suggests that removing the surface damage is more critical than reduction of topography for EBSD.",
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    AB - The effects of mechanical polishing with Al2O3 and colloidal SiO2 followed by electropolishing were studied for preparation of metal alloy specimens for Electron Backscatter Diffraction (EBSD). The alloys studied were Inconel 718, a commonly used nickel-based superalloy, and a Ti-Al-Nb alloy (nominally Ti-22Al-28Nb(at.%)). Atomic Force Microscopy was used to measure the surface topography to attempt to correlate nano-scale surface roughness with EBSD pattern quality. The results suggest that mechanically polishing with Al2O3 followed by electropolishing for a short time can produce EBSD pattern confidence indices and image quality values that are equal to or better than those produced by mechanically polishing with colloidal SiO2 alone. The data suggests that surface roughness on the scale considered here has much less effect on EBSD pattern quality than had been previously believed. The data suggests that removing the surface damage is more critical than reduction of topography for EBSD.

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