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Energy-Dispersive X-Ray Analysis for Carbon on and in Steels

Published online by Cambridge University Press:  06 March 2019

R. G. Musket
R. G. Musket*
Affiliation:
Kevex Corporation Foster City, California 94404
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Abstract

Alpha-particle induced X-ray emission studies of steel samples have provided quantitative, non-destructive determinations of the carbon content in surface layers and in the bulk. The analyses were performed using the ALPHA-X™ technique of alpha-induced X-ray emission. Absolute carbon surface densities were determined directly from the ratio of the carbon X-ray count-rate for the unknown layers to that for standard free-standing carbon films. Assessment of the bulk detection limit was made using a steel standard with 0.5 weight-percent carbon. The threesigma minimum detection limits for twenty minute analyses were 0.1μg carbon/cm2 (equivalent to≃5 Å) in the layers and 1000 ppm carbon in the bulk.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 22: Twenty-Seventh Annual Conference on Applications of X-ray Analysis, August 1-4, 1978 , 1978 , pp. 401 - 410
Copyright
Copyright © International Centre for Diffraction Data 1978

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