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首页> 外文期刊>ISIJ international >Sample Temperature Effect on Steel Measurement Using SP-LIBS and Collinear Long-short DP-LIBS
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Sample Temperature Effect on Steel Measurement Using SP-LIBS and Collinear Long-short DP-LIBS

机译：使用SP-LIBS和Collinear长短路 - Libs对钢测量的采样温度效应

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Laser induced breakdown spectroscopy (LIBS) has been investigated as a potential multi-element quantitative analysis tool for the quality control of on-line steel production. This research investigated influence of sample temperature on steel sample measurement using collinear long-short dual-pulse LIBS (long-short DP-LIBS) and single-pulse LIBS (SP-LIBS). The standard steel sample has been uniformly heated in a muffle furnace from 20°C to 700°C. The experimental results show that sample temperature has significantly effect on measurement result using SP-LIBS. However, long-short DP-LIBS can effectively reduce the sample temperature effect on measurement result. The detection characteristics of long-short DP-LIBS and SP-LIBS were compared using the intensity ratio of I _(Mn 404.136 nm)/I _(Fe 400.524 nm) and I _(Fe 402.187 nm)/I _(Fe 400.524 nm) under different delay time and different sample temperature conditions. The signal intensity and plasma temperature can be maintained higher and more stable for a period of time and at different sample temperature by long-short DP-LIBS with smaller error bar compared with that of SP-LIBS, which indicated long-short DP-LIBS has better measurement repeatability than SP-LIBS. The plasma temperature correction method was applied to compare the detection features of long-short DP-LIBS and SP-LIBS. The signal stability of long-short DP-LIBS measurement was improved significantly at different sample temperature with plasma temperature correction. These results demonstrated that the effect of sample temperature can be reduced using long-short DP-LIBS method to improve the on-line detection capability for steel measurement in complex environment.
机译：激光诱导击穿光谱（LIBS）被研究为潜在的多元素定量分析工具，用于在线钢铁生产的质量控制。本研究通过共线短路双脉冲（长短路 - LIB）和单脉冲LIB（SP-LIB）调查了样品温度对钢样品测量的影响。标准钢样品在20℃至700℃的马弗炉中均匀地加热。实验结果表明，采样温度使用SP-Libs对测量结果显着影响。然而，长短的DP-LIB可以有效地降低对测量结果的样本温度效应。使用I _（MN 404.136nm）/ I _（Fe 400.524nm）和I _（Fe 402.187 nm）/ I _（Fe 400.524）进行比较长短的DP-Libs和SP-Libs的检测特性。（Fe 402.187 nm）/ i _（fe 400.524 nm）在不同的延迟时间和不同的样品温度条件下。信号强度和等离子体温度可以保持较高且更稳定一段时间，并且通过具有较小误差栏的长短的DP-LIB在不同的SP-LIB上的时间和SP-Libs的时间温度较高，这表明了长短的DP-libs具有比SP-libs更好的测量重复性。应用等离子体温度校正方法比较长短路DP-LIB和SP-LIB的检测特征。在不同的样本温度下，具有等离子体温度校正的不同样品温度显着改善了长短DP-libs测量的信号稳定性。这些结果表明，使用长短的DP-libs方法可以减少样品温度的影响，以改善复杂环境中的钢测量的在线检测能力。

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