Speciation of inclusions and precipitates in steel by means of XRF and LEEIXS

Reisel, John R.; Geyer, J.; Flock, Jörg; Sommer, D.

doi:10.1002/xrs.619

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…The shape and relative intensity of the WZ phase is almost in perfect agreement with a previous experiment [20]. Another experiment [21] obtained with a poorer spectral resolution is also in agreement with the presented spectra.…”

Section: Experimental Results and Calculationssupporting

confidence: 91%

Electronic structure of wurtzite and zinc-blende AlN

et al. 2004

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The electronic structure of AlN in wurtzite and zinc-blende phases is studied experimentally and theoretically. By using x-ray emission spectroscopy, the Al 3p, Al 3s and N 2p spectral densities are obtained. The corresponding local and partial theoretical densities of states (DOS), as well as the total DOS and the band structure, are calculated by using the full potential linearized augmented plane wave method, within the framework of the density functional theory. There is a relatively good agreement between the experimental spectra and the theoretical DOS, showing a large hybridization of the valence states all along the valence band. The discrepancies between the experimental and theoretical DOS, appearing towards the high binding energies, are ascribed to an underestimation of the valence band width in the calculations. Differences between the wurtzite and zinc-blende phases are small and reflect the slight variations between the atomic arrangements of both phases. 78.70.En; 71.20.Nr; 71.15.Mb Typeset using REVT E X

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Section: Experimental Results and Calculationssupporting

confidence: 91%

Electronic structure of wurtzite and zinc-blende AlN

et al. 2004

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“…Na literatura, vários são os trabalhos que demonstram a capacidade da técnica em quantificar metais em ligas por FRX. [69][70][71] Porém, uma das mais interessantes aplicações da FRX é aquela que auxilia na investigação da composição de peças de interesse arqueológico, como moedas gregas (século VI A.C.), 72 do Império Otomano (séculos XVI e XVII D.C.) 73 e espanholas (século XIX D.C.), 74 artefatos romanos de bronze (séculos I a III D.C) 75 e brincos portugueses de ouro (séculos V a III A.C.). 76 Nesses casos, a característica de realizar análises não destrutivas é explorada, preservando a integridade de peças que possuem valor histórico inestimável.…”

Section: Espectrometria De Fluorescência De Raios Xunclassified

A Brief Overview of Metal Analysis in Alloys and Related Matrices: Some Classical Methods and Modern Spectroscopic Methods

Da-Col¹

2014

Revista Virtual De Química

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Industrial processes require materials with controlled properties, such as metals and alloys, which are obtained from a combination of metals and other species. The steel production in Brazil in 2013, e.g., was over 34 million tons. This importance reflects in standardized methods of analysis, such as ABNT and ASTM. Some of these methods are classical methods (gravimetric and volumetric) or instrumental and their choice depend on the analyte, the amount of sample, other interferences and cost. This text is a brief overview of recommended methods and those who bring innovations to metal analysis.

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“…In a separate publication 264 the Japanese team studied photo-excited F Ka satellite spectra of CaF 2 . A group in Germany 308 studied different Al and Ti inclusions and precipitates in steel by investigating Al Kb and Ti L lines to speciate carbides, nitrides, oxides and sulfides.…”

Section: Chemical State Analysis and Speciationmentioning

confidence: 99%

Atomic spectrometry update. X-ray fluorescence spectrometry

Potts

Ellis

Kregsamer³

et al. 2003

J. Anal. At. Spectrom.

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6.4 Applications 7 Portable and mobile XRF 8 On-line XRF 9 Applications 9.1 Sample preparation and preconcentration techniques 9.2 Geological 9.3 Environmental 9.4 Archaeological and forensic 9.5 Industrial 9.6 Clinical and biological 9.7 Thin films 9.8 Chemical state analysis and speciation 10 ReferencesThis annual review of X-ray fluorescence covers developments over the period 2002-2003 in instrumentation and detectors, matrix correction and spectrum analysis procedures, X-ray optics and microfluorescence, synchrotron XRF, TXRF, portable XRF and on-line applications as assessed from the published literature. The review also covers a survey of applications, including sample preparation, geological, environmental, archaeological, forensic, biological, clinical, thin films, chemical state and speciation studies. During the current review period, trends were noted in the increased use of principal component analysis in the assessment of environmental data and chemometrics in the interpretation of XRF data in general, meticulous experimentation to model the emission spectra of X-ray tubes to improve the accuracy of FP correction procedures, a slowdown in reports on the development of ultra-high resolution cryogenic ED detectors, the use of EXAFS and XANES in fluorescence, as opposed to the more traditional absorption mode, continued interest in SR sources and interesting artefact measurements performed using XRF and related instrumentation. Instrumentation General instrumentation and excitation sourcesSeveral developments in the design of commercially available X-ray spectrometers feature in the literature during this review

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Speciation of inclusions and precipitates in steel by means of XRF and LEEIXS

Cited by 4 publications

References 15 publications

Electronic structure of wurtzite and zinc-blende AlN

Electronic structure of wurtzite and zinc-blende AlN

A Brief Overview of Metal Analysis in Alloys and Related Matrices: Some Classical Methods and Modern Spectroscopic Methods

Atomic spectrometry update. X-ray fluorescence spectrometry

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