Die quantitative Analyse von Sauerstoffverbindungen mit der Elektronenstrahlmikrosonde

Kohlhaas, Erich; Scheiding, Frank

doi:10.1002/srin.197001574

Cited by 8 publications

(2 citation statements)

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“…It should be noted that, apart from Henke's directly measured data, the present values are generally different from those often quoted in the literature (Weisweiler 1970); this is particularly the case for elements whose absorption edges are close to the energy of oxygen K x-rays. Data derived from microanalysis measurements (Kohlhaas and Scheiding 1970) clearly disagree for high values of p/p. However, since these workers used the simple Philibert correction, which breaks down at high x and overcorrects for absorption, calculated x values would be expected to be low in such a treatment.…”

Section: Discussionmentioning

confidence: 88%

Electron probe microanalysis using oxygen x-rays: I. Mass absorption coefficients

Love

Cox

Scott

1974

J. Phys. D: Appl. Phys.

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Electron probe microanalysis of oxygen in a range of binary and ternary oxides is described. Experimental data are presented for a range of electron accelerating voltages and for two different take-off angle instruments. The ratio of oxygen K emission from specimen and standard is found to reach a limiting value, the same for each instrument, as the applied voltage is increased. The observations are shown to support the thin-film model (Duncumb and Melford 1966) proposed for quantitative analysis of light elements and also to enable its range of applicability to be established in terms of specimen characteristics and experimental conditions. The model is used together with chemical composition data for the oxides, and a consistent set of mass absorption coefficients are calculated which are considered to be accurate within 10%. These new data are discussed and compared with previously published values.

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Section: Discussionmentioning

confidence: 88%

Electron probe microanalysis using oxygen x-rays: I. Mass absorption coefficients

Love

Cox

Scott

1974

J. Phys. D: Appl. Phys.

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“…Application of both the simple and full Philibert expressions, in conjunction with an atomic number correction (Duncumb and Reed 1968) and a fluorescence correction (Reed 1965), to the analysis of titanium carbides was discussed by Gray and Wert (1969), who concluded that the absorption and the atomic number corrections were in error. The simple Philibert correction was used also by Kohlhaas andScheiding (1969, 1970) in carbon and oxygen analyses but this work concentrated on deriving mass absorption coefficients from microanalysis measurements. A simple correction model, the thin-film approximation proposed specifically for light-element microanalysis by Duncumb and Melford (1966), was studied by Love et a1 (1974) with reference to the analysis of oxygen in oxides.…”

Section: Introductionmentioning

confidence: 99%

Electron probe microanalysis using oxygen x-rays: II. Absorption correction models

Love

Cox

Scott

1974

J. Phys. D: Appl. Phys.

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Proposed absorption correction methods for quantitative electron probe microanalysis are evaluated with reference to oxygen analysis of oxides. Three established absorption correction procedures, the Andersen-Wittry, simple Philibert and full Philibert models, are considered and their predictions compared with experimental measurements. The findings are discussed in relation to the x-ray distribution with depth in the target as given by the different models. It is shown that the full Philibert treatment gives best agreement, although none of the models provides a satisfactory absorption correction for practical light-element microanalysis.

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Quantitative electron probe microanalysis of carbon in binary carbides. I—principles and procedures

Bastin

Heijligers

1986

X-Ray Spectrometry

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Introductory investigations performed in order to make quantitative electron-probe microanalysis of very light elements such as boron, carbon, nitrogen or oxygen possible are described. The practical problems encountered in this kind of work are discussed in detail and, where possible, solutions are proposed. It is shown that with very light elements such as carbon it is no longer permitted to measure x-ray intensities at the position of the maximum of the emission peak as the shape of the carbon K a peak is subject to strong alterations, depending on the type of chemical bond involved. As a consequence, integral measurements have to be performed and it is shown that errors of 3040% can easily be made if this is neglected. The lengthy procedures, connected with integral intensity measurements, can be shortened considerably by the introduction of arealpeak factors, which, by definition, represent the ratio between the correct area (integral) and the peak intensity ratio. The accurate determination of such factors for 13 binary carbides is described. This set of factors will permit future measurements simply on the peak; multiplication of the peak intensity ratio by the appropriate aredpeak factors will then yield the correct integral intensity ratios.

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Die quantitative Analyse von Sauerstoffverbindungen mit der Elektronenstrahlmikrosonde

Cited by 8 publications

References 0 publications

Electron probe microanalysis using oxygen x-rays: I. Mass absorption coefficients

Electron probe microanalysis using oxygen x-rays: I. Mass absorption coefficients

Electron probe microanalysis using oxygen x-rays: II. Absorption correction models

Quantitative electron probe microanalysis of carbon in binary carbides. I—principles and procedures

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