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题名: In situ analysis of steel melt by double-pulse laser-induced breakdown spectroscopy with a Cassegrain telescope
作者: Sun LX(孙兰香); Yu HB(于海斌); Cong ZB(丛智博); Xin Y(辛勇); Li Y(李洋); Qi LF(齐立峰)
作者部门: 工业控制网络与系统研究室
关键词: Laser-induced breakdown spectroscopy ; Double-pulse ; In situ analysis ; Cassegrain telescope ; Liquid steel
刊名: Spectrochimica Acta - Part B Atomic Spectroscopy
ISSN号: 0584-8547
出版日期: 2015
卷号: 112, 页码:40-48
收录类别: SCI ; EI
产权排序: 1
项目资助者: National Natural Science Funds (Grant No. 61473279), the National High-Tech Research and Development Program of China (Grant No. 2012AA040608), and the Development of Scientific Research Equipment Program of the Chinese Academy of Sciences (No. YZ201247).
摘要: A laser-induced breakdown spectroscopy (LIBS) system combining a Cassegrain telescope and a double-pulse laser mode was developed for the in situ analysis of steel melt. Optical- and electrical-related devices were sealed in an enclosed box away from the high-temperature steel melt surface. Connected to the box by a flange, a long hollow steel tube was used for the laser and plasma emission transmission path. At the tip of the steel tube, a refractory lance that can withstand high temperatures was immersed into the molten steel surface to pass through the surface slag layer. The designed optical structure successfully keeps the photoelectric-associated system components away from the high-temperature environment, thus reducing the complexity of system protection and maintenance. The signals obtained from single-pulse and double-pulse LIBS were comprehensively compared; the effect of argon blowing on spectral stability was analyzed; and the quantitative analysis of Si, Mn, Cr, Ni and V in molten steel samples was evaluated using both a univariate model and a partial least squares (PLS) model. The relative root mean square error of prediction (RMSEP) values and average relative standard deviations (RSDs) of the PLS model were approximately 5% and 2%-3%, respectively, both of which are less than those of the univariate calibration model. The sealed LIBS setup was also transferred to a steel plant for application testing, and the obtained accuracy approached the plant's accuracy requirements. Furthermore, quantitative analysis of carbon was also achieved on the basis of the PLS models. These results demonstrate that the developed system is promising for the in situ analysis of melt steel in the steelmaking industry.
语种: 英语
WOS记录号: WOS:000362608600007
WOS标题词: Science & Technology ; Technology
类目[WOS]: Spectroscopy
关键词[WOS]: INDUCED PLASMA ; LIQUID STEEL ; VACUUM-ULTRAVIOLET ; MOLTEN STEEL ; LIBS ; SPECTROMETRY ; CHINA ; ABLATION ; SAMPLES ; SINGLE
研究领域[WOS]: Spectroscopy
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/16954
Appears in Collections:工业控制网络与系统研究室_期刊论文

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