In situ analysis of magnesium alloy using a standoff and double-pulse laser-induced breakdown spectroscopy system

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	In situ analysis of magnesium alloy using a standoff and double-pulse laser-induced breakdown spectroscopy system
	Xin Y(辛勇); Sun LX(孙兰香); Yang ZJ(杨志家); Zeng P(曾鹏); Cong ZB(丛智博); Qi LF(齐立峰)
刊名	Frontiers of Physics
	2016
卷号	11 期号:5 页码:1-10
关键词	laser-induced breakdown spectroscopy standoff double-pulse online magnesium alloy
ISSN号	2095-0462
通讯作者	孙兰香
产权排序	1
中文摘要	To monitor the components of molten magnesium alloy during the smelting process in real time and online, we designed a standoff double-pulse laser-induced breakdown spectroscopy (LIBS) analysis system that can perform focusing, collecting and imaging of long-range samples. First, we tested the system on solid standard magnesium alloy samples in the laboratory to establish a basis for the online monitoring of the components of molten magnesium alloy in the future. The experimental results show that the diameters of the focus spots are approximately 1 mm at a range of 3 m, the ablation depth of the double-pulse mode is much deeper than that of the single-pulse mode, the optimum interpulse delay of the double pulse is inconsistent at different ranges, and the spectral intensity decays rapidly as the range increases. In addition, the enhancement effect of the double pulse at 1.89 m is greater than that at 2.97 m, the maximum enhancement is 7.1-fold for the Y(I)550.35-nm line at 1.89 m, and the calibration results at 1.89 m are better than those at 2.97 m. At 1.89 m, the determination coefficients (R2) of the calibration curves are approximately 99% for Y, Pr, and Zr; the relative standard deviations (RSDs) are less than 10% for Y, Pr, and Zr; the root mean square errors (RMSEs) are less than 0.037% for Pr and Zr; the limits of detection (LODs) are less than 1000 ppm for Y, Pr, and Zr; and the LODs of Y, Pr, and Zr at 2.97 m are higher than those at 1.89 m. Additionally, we tested the system on molten magnesium alloy in a magnesium alloy plant. The calibration results of the liquid magnesium alloy are not as favorable as those of the sampling solid magnesium alloys. In particular, the RSDs of the liquid magnesium alloy are approximately 20% for Pr and La. However, with future improvements in the experimental conditions, the developed system is promising for the in situ analysis of molten magnesium alloy.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	LIQUID STEEL ; QUANTITATIVE-ANALYSIS ; SPATIAL CONFINEMENT ; ELEMENTAL ANALYSIS ; OPTICAL-EMISSION ; INDUCED PLASMA ; LIBS ; CHINA ; SPECTROMETER ; ABLATION
收录类别	SCI ; CSCD
语种	英语
WOS记录号	WOS:000390888100003
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/19718]
专题	沈阳自动化研究所_工业控制网络与系统研究室
推荐引用方式 GB/T 7714	Xin Y,Sun LX,Yang ZJ,et al. In situ analysis of magnesium alloy using a standoff and double-pulse laser-induced breakdown spectroscopy system[J]. Frontiers of Physics,2016,11(5):1-10.
APA	Xin Y,Sun LX,Yang ZJ,Zeng P,Cong ZB,&Qi LF.(2016).In situ analysis of magnesium alloy using a standoff and double-pulse laser-induced breakdown spectroscopy system.Frontiers of Physics,11(5),1-10.
MLA	Xin Y,et al."In situ analysis of magnesium alloy using a standoff and double-pulse laser-induced breakdown spectroscopy system".Frontiers of Physics 11.5(2016):1-10.