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  • Wariwoda, L.  (2)
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  • 1
    Online Resource
    Online Resource
    Analysis of Graphite in Caststeels using XRFA
    Cambridge University Press (CUP) ; 1992
    In:  Advances in X-ray Analysis Vol. 36 ( 1992), p. 35-40
    Details
    In: Advances in X-ray Analysis, Cambridge University Press (CUP), Vol. 36 ( 1992), p. 35-40
    Abstract: For carbon analysis in an iron-matrix the C-Kα intensity is not only a function of the amount of graphite. but also of the diameter of the spherolites and, for a given total carbon content, of the graphite/cementite ratio. In order to verify this, steel and caststeel sample surfaces were photographed before and after etching and the images digitized. The arcal fractions covered by graphite, cementite, and iron were used to compute the corresponding individual weight fractions and total carbon contents. Count rates were drawn to the scale of these as well as of the nominal carbon concentrations.
    Type of Medium: Online Resource
    ISSN: 0376-0308 , 2631-3626
    URL: Article
    DOI: 10.1154/S0376030800018619
    RVK:
    UQ 5600
    RVK:
    VE 2800
    RVK:
    UQ 1090
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 1992
    detail.hit.zdb_id: 2498440-1
    Location Call Number Limitation Availability
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    Online Resource
  • 2
    Online Resource
    Online Resource
    XRFA of Carbon in Steels
    Cambridge University Press (CUP) ; 1992
    In:  Advances in X-ray Analysis Vol. 36 ( 1992), p. 41-46
    Details
    In: Advances in X-ray Analysis, Cambridge University Press (CUP), Vol. 36 ( 1992), p. 41-46
    Abstract: A set of standard samples consisting of low alloy steels, tool steels and a graphite standard was prepared carefully for measurements by polishing (down to 0.3μm alumina powder) and cleaning of the surfaces. Photographs from optical and scanning electron microscopical images were taken in order to provide information about the microstructure. The measured carbon fluorescent intensities are interpreted in view of this information as well as compared to calculated data based on fundamental parameter models. Thereby excitation by iron and carbon photoelectrons as well as secondary enhancement effects by iron K and L lines and other matrix elements were taken into account. Results suggest that the count rates are not only a function of the total carbon content, but also of graphite segregations and to some extent of the specimen preparation procedure. Graphite particles are easily washed out and the little remaining holes may remain partially covered with carbon or filled with polishing residuals, which leads to reduced count rates.
    Type of Medium: Online Resource
    ISSN: 0376-0308 , 2631-3626
    URL: Article
    DOI: 10.1154/S0376030800018620
    RVK:
    UQ 5600
    RVK:
    VE 2800
    RVK:
    UQ 1090
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 1992
    detail.hit.zdb_id: 2498440-1
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
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