Quantitative Determination of Low Contents of Manganese in Steels by EPMA
Wang, Daoling; Sun, Aiqin
Corresponding AuthorWang, Daoling(
AbstractThe fluorescence effect induced by K-beta photons is usually so small that it can be neglected. However, in the Fe-Mn system, omitting K-beta fluorescence correction will lead to the overestimation of the Mn content especially when Mn is the minor alloy element. In this study, the error in the Mn concentration induced by K-beta fluorescence was investigated by both Monte Carlo simulation, using the pyPENELOPE program, and systematic electron probe measurements on the Fe-0.53% Mn alloy standard by the aid of CalcZAF software. It is shown that the error caused by K-beta fluorescence exceeds 4% for the Fe-0.53% Mn alloy. The problem can be overcome by utilizing CalcZAF in which beta-line fluorescence has been included, or by employing a similar standard Fe-0.85% Mn for Mn in the absence of beta-line fluorescence correction. In addition, a modified calibration curve method, using k-values instead of X-ray intensity as a variable, is presented and used to measure the Mn concentration. The accuracy of this method is as good as or better than that of the conventional matrix correction method. Compared with conventional calibration curve methods, it is time-saving because the k-value is not sensitive to instrument fluctuations and the established curve remains valid for a long period.
Keywordelectron probe microanalysis fluorescence effect k-value Mn modified calibration curve method weighted least squares
Indexed BySCI
WOS Research AreaMaterials Science ; Microscopy
WOS SubjectMaterials Science, Multidisciplinary ; Microscopy
WOS IDWOS:000474798800006
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWang, Daoling
AffiliationChinese Acad Sci, Inst Met Res, Testing Ctr, Struct Anal Div, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Wang, Daoling,Sun, Aiqin. Quantitative Determination of Low Contents of Manganese in Steels by EPMA[J]. MICROSCOPY AND MICROANALYSIS,2019,25(3):625-629.
APA Wang, Daoling,&Sun, Aiqin.(2019).Quantitative Determination of Low Contents of Manganese in Steels by EPMA.MICROSCOPY AND MICROANALYSIS,25(3),625-629.
MLA Wang, Daoling,et al."Quantitative Determination of Low Contents of Manganese in Steels by EPMA".MICROSCOPY AND MICROANALYSIS 25.3(2019):625-629.
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