Sensitive determination of silicon contents in low-alloy steels using micro laser-induced breakdown spectroscopy assisted with laser-induced fluorescence

Jiaming Li, Manling Xu, Qiongxiong Ma, Nan Zhao, Xiangyou Li, Qingmao Zhang, Liang Guo, Yongfeng Lu

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Silicon element plays an important role in strength and hardness improvement in steels, but is harmful for ductility, tenacity, and anti-corrosion. Therefore, silicon content should be fast determined in steel manufacture to keep silicon in moderation. In this work, micro laser-induced breakdown spectroscopy assisted with laser-induced fluorescence (μLIBS-LIF) was proposed to sensitively determine silicon in low-alloy steels. The mechanism and excitation selection of laser-induced silicon atomic fluorescence in laser-induced plasma were discussed. Under 10 µm laser-ablated scatters, the results showed that μLIBS-LIF had analytical performance with R2 of 0.9998, LoD of 2.8 μg g−1, and RMSECV of 63 μg g−1, significantly better than μLIBS under their respective optimal conditions. The analytical sensitivity in μLIBS-LIF was even better than macro LIBS in others’ works. As our best knowledge, the silicon LoD in LIBS technique was improved to better than 10 μg g−1 in steel matrix for the first time. This work demonstrates μLIBS-LIF as a capable and potential approach for fast determining silicon element in steel industries.

Original languageEnglish (US)
Pages (from-to)697-702
Number of pages6
JournalTalanta
Volume194
DOIs
StatePublished - Mar 1 2019

Fingerprint

Laser induced breakdown spectroscopy
Steel
Silicon
High strength steel
Spectrum Analysis
Lasers
Fluorescence
Tenacity
Iron and steel industry
Macros
Ductility
Hardness
Corrosion
Plasmas
Industry

Keywords

  • Laser-induced breakdown spectroscopy
  • Laser-induced fluorescence
  • Silicon
  • Steel

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Sensitive determination of silicon contents in low-alloy steels using micro laser-induced breakdown spectroscopy assisted with laser-induced fluorescence. / Li, Jiaming; Xu, Manling; Ma, Qiongxiong; Zhao, Nan; Li, Xiangyou; Zhang, Qingmao; Guo, Liang; Lu, Yongfeng.

In: Talanta, Vol. 194, 01.03.2019, p. 697-702.

Research output: Contribution to journalArticle

Li, Jiaming ; Xu, Manling ; Ma, Qiongxiong ; Zhao, Nan ; Li, Xiangyou ; Zhang, Qingmao ; Guo, Liang ; Lu, Yongfeng. / Sensitive determination of silicon contents in low-alloy steels using micro laser-induced breakdown spectroscopy assisted with laser-induced fluorescence. In: Talanta. 2019 ; Vol. 194. pp. 697-702.
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