SCANNING ELECTRON MICROSCOPY-ENERGY DISPERSIVE X-RAY ANALYSIS OF CEMENT CONSTITUENTS - SOME CAUTIONS

Application of SEM-EDXA instrumentation to rough fracture surface specimens of cement systems should be carried out with due regard to certain inherent problems. Data indicate that the effective lateral spread of the x-ray source may be as much as 1.5 um. Theoretical calculations and experimental evidence are supplied indicating that variations in take-off and incidence angles can cause significant variations in ratios of peak heights obtained for a given composition, but that if the take-off angle is restricted to the range between 60 percent and 90 percent and the incidence angle to between 45 percent and 90 percent acceptable results may be obtained. The problems involved in compositional analysis are discussed; it is suggested that the operator maintain awareness of geometric and other possible sources of error and avoid recording spectra in areas that may be subject to such difficulties. /Author/

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  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  USA  10523
  • Authors:
    • Diamond, S
    • Young, J F
    • Lawrence Jr, F V
  • Publication Date: 1974-11

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Filing Info

  • Accession Number: 00265337
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 11 1975 12:00AM