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A practical method for the accurate analysis of high alloy steels by X‐ray emission
Author(s) -
Caldwell Vincent E.
Publication year - 1976
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300050108
Subject(s) - alloy , x ray , analytical chemistry (journal) , analyte , materials science , set (abstract data type) , sample (material) , computational physics , chemistry , thermodynamics , metallurgy , physics , computer science , optics , chromatography , programming language
A method for the conversion of X‐ray intensities to composition is given. The method is based on the Lachance‐Traill equation which uses empirical inter‐element correction coefficients. The coefficients are treated as ‘sliding constants’ the values of which depend on the relative concentrations of the analyte and the interfering elements. Values for the coefficients are calculated over wide concentration ranges using the theoretical equations of Sherman. The calculated coefficients are adjusted empirically to achieve high accuracy. Only the measured X‐ray intensities from the sample and a single standard are required for an analysis. Final results are obtained by solving a set of simultaneous linear equations. Results of analyses of high alloy steels containing Cr, Ni, Mn, Mo, Cu, Si, Ti, Cb and Fe are given to illustrate the accuracy of the method.