Quantitative Determination of Low Contents of Manganese in Steels by EPMA

doi:10.1017/S1431927619000230

IMR OpenIR

	Quantitative Determination of Low Contents of Manganese in Steels by EPMA
	Wang, Daoling; Sun, Aiqin
通讯作者	Wang, Daoling(wangdaoling@imr.ac.cn)
	2019-06-01
发表期刊	MICROSCOPY AND MICROANALYSIS
ISSN	1431-9276
卷号	25 期号:3 页码:625-629
摘要	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.
关键词	electron probe microanalysis fluorescence effect k-value Mn modified calibration curve method weighted least squares
DOI	10.1017/S1431927619000230
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Microscopy
WOS类目	Materials Science, Multidisciplinary ; Microscopy
WOS记录号	WOS:000474798800006
出版者	CAMBRIDGE UNIV PRESS
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/135278
专题	中国科学院金属研究所
通讯作者	Wang, Daoling
作者单位	Chinese Acad Sci, Inst Met Res, Testing Ctr, Struct Anal Div, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 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.