Development of miniaturized remote laser-induced breakdown spectroscopy instrument and its application in analysis of silicon, molybdenum and chromium in alloy steel
SONG Xiaoran1, NIU Guanghui2, TANG Yue3, XU Yingtong3, LIN Qingyu*3, DUAN Yixiang3
1. College of Mechanical and Control Engineering,Guilin University of Technology,Guilin 541004,China; 2. Baowu Heavy Industry Co.,Ltd. R&D Center,Shanghai 201900,China; 3. School of Mechanical Engineering,Sichuan University,Chengdu 610064,China
Abstract：In order to improve the flexible analysis capability of laser-induced breakdown spectroscopy(LIBS) under various extreme environments, the miniaturization design of remote LIBS instrument was realized in this study. The instrument adopted modular design, and the tripod head was used as base support. It was applicable for the flexible detection and analysis of remote targets. 8 certified reference materials of alloy steel were used as the experimental subject. The spectral acquisition was carried out under the condition of 2 m. 3 elements in certified reference materials, including Si, Mo and Cr, were quantitatively analyzed. The quantitative models of 3 elements were established by random forest (RF) algorithm, and the coefficients of determination were 0.999 8, 0.998 8 and 0.999 1, respectively. During the model validation, the minimum relative errors of predicted contents of 3 elements (Si, Mo and Cr) in validation samples were 14.6%, 12.9% and 11.6%, respectively. The developed miniaturized remote laser-induced breakdown spectroscopy instrument showed good remote quantitative detection capability.
宋骁冉, 牛广辉, 汤悦, 许应铜, 林庆宇, 段忆翔. 小型化远程激光诱导击穿光谱仪器研发及对合金钢中硅钼铬的分析[J]. 冶金分析, 2024, 44(9): 8-13.
SONG Xiaoran, NIU Guanghui, TANG Yue, XU Yingtong, LIN Qingyu, DUAN Yixiang. Development of miniaturized remote laser-induced breakdown spectroscopy instrument and its application in analysis of silicon, molybdenum and chromium in alloy steel. , 2024, 44(9): 8-13.
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