| Quantitative Determination of Low Contents of Manganese in Steels by EPMA | |
| Wang, Daoling; Sun, Aiqin | |
| Corresponding Author | Wang, Daoling(wangdaoling@imr.ac.cn) |
| 2019-06-01 | |
| Source Publication | MICROSCOPY AND MICROANALYSIS
 |
| ISSN | 1431-9276 |
| Volume | 25Issue:3Pages:625-629 |
| Abstract | The 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. |
| Keyword | electron probe microanalysis fluorescence effect k-value Mn modified calibration curve method weighted least squares |
| DOI | 10.1017/S1431927619000230 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Microscopy |
| WOS Subject | Materials Science, Multidisciplinary ; Microscopy |
| WOS ID | WOS:000474798800006 |
| Publisher | CAMBRIDGE UNIV PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/135278 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Daoling |
| Affiliation | Chinese 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. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment