氩气环境对激光诱导击穿光谱法检测钢中C、P、S元素的影响研究  

Study on the Influence of Argon Environment on the Determination of C,P and S Elements in Steel by Laser-Induced Breakdown Spectrometry

作　　者：张佳伟 吴东升[1] 周洋 李洋[2,3,4] 孙兰香[2,3,4] ZHANG Jia-wei;WU Dong-sheng;ZHOU Yang;LI Yang;SUN Lan-xiang(Shenyang Ligong University,Shenyang 110159,China;State Key Laboratory of Robotics,Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110016,China;Institutes for Robotics and Intelligent Manufacturing,Chinese Academy of Sciences,Shenyang 110169,China;Liaoning Liaohe Laboratory,Shenyang 110169,China)

机构地区：[1]沈阳理工大学,辽宁沈阳110159 [2]中国科学院沈阳自动化研究所机器人学国家重点实验室,辽宁沈阳110016 [3]中国科学院机器人与智能制造创新研究院,辽宁沈阳110169 [4]辽宁辽河实验室,辽宁沈阳110169

出　　处：《光谱学与光谱分析》2024年第10期2834-2839,共6页Spectroscopy and Spectral Analysis

基　　金：国家重点研发计划项目(2021YFB3202402)资助。

摘　　要：激光诱导击穿光谱技术在实现钢水成分在线分析上展现了强大的应用潜力。然而,在测量钢中非常重要的C、P、S组成元素时,由于其有效的发射谱线无法在空气中远距离传输,这些元素的探测一直是个挑战。该论文工作研究了在1.5 m长探枪下,探枪中氩气环境对检测钢中C、P、S元素的影响规律,发现氩气流量过大或过小都不利于光谱测量,在气流量设置为11 L·min^(-1)时,获得的光谱最稳定且谱线强度最大。使用14个标准钢样本,在最优气流量下对C、P、S三种元素实现了明显检出以及定量分析。通过内标标定后,三种元素获得的检出限(LOD)分别为0.009%、0.04%、0.015%,相对标准偏差(RSD)分别为2.34%、1.05%、1.01%,相关系数(R)分别为0.998、0.997、0.987,均方根误差(RMSE)分别为0.02%、0.02%、0.03%。该论文研究成果验证了该探枪设计的有效性,为实现钢水成分中C、P、S在线分析提供了重要的设计依据。Laser-induced breakdown spectroscopy has shown great-potential for application in the online analysis of molten steel composition.However,detecting the important C,P,and S component elements in molten steel has been challenging because their effective emission lines cannot be transmitted over long distances in the air.This paper studies the influence of the argon environment on detecting C,P,and S elements in steel under a 1.5-meter long probe gun;it is found that an argon flow rate that is too large or too small is not conducive to spectral measurement.When the gas flow rate is set to 11 L·min^(-1),the spectrum obtained is the most stable,and the spectral line intensity is the largest.Using 14 standard steel samples,the three elements C,P,and S were detected and quantitatively analyzed under optimal gas flow.After the internal standard calibration,the limit of detection(LOD)of the three elements were 0.009%,0.04%,and 0.015%,the relative standard deviations(RSD)were 2.34%,1.05%,and 1.01%,and the correlation coefficients(R)were 0.998,0.997 and 0.987,respectively.The root mean square errors(RMSE)were 0.02%,0.02%and 0.03%,respectively.The research results of this paper verify the effectiveness of the design of the probe gun and provide an important design basis for the online analysis of C,P,and S in the composition of molten steel.

关 键 词：激光诱导击穿光谱 真空紫外光谱 长距离 氩气流量 元素检测 碳 磷 硫 

分 类 号：O657.38[理学—分析化学]