Carbon detection in solid and liquid steel samples using ultraviolet long-short double pulse laser-induced breakdown spectroscopy

Cui, Minchao; Deguchi, Yoshihiro; Yao, Changfeng; Wang, Zhenzhen; Tanaka, Seiya; Zhang, Dinghua

doi:10.1016/j.sab.2020.105839

Cited by 25 publications

(14 citation statements)

References 37 publications

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“…During the LS-DP-LIBS processes, the plasma was induced by short pulse, but the generation and development of plasma were affected by long pulse. [30][31][32][33][34] When the plasma was generated by LS-DP-LIBS in this study, the ablated matter was strongly confined inside the cavitation bubble induced by the long pulse to generate the plasma, which can be detected to record the distinguishable emission signal. The plasma pictures of SP-LIBS and LS-DP-LIBS are also presented in Fig.…”

Section: Comparison Of Sp-libs and Ls-dp-libsmentioning

confidence: 86%

“…LS-DP-LIBS method demonstrated the signal enhancement and analytical performance improvement for solid steel samples in the atmosphere under various conditions. [30][31][32][33] The measurement features of carbon detection in liquid steel samples using LS-DP-LIBS were also discussed. 33 The superior detection ability for underwater measurement was verified by the measurement of the Al sample and copper sample under water.…”

Section: Introductionmentioning

confidence: 99%

“…[30][31][32][33] The measurement features of carbon detection in liquid steel samples using LS-DP-LIBS were also discussed. 33 The superior detection ability for underwater measurement was verified by the measurement of the Al sample and copper sample under water. 30,34 The accuracy of the DP-LIBS technique for underwater analysis has also been demonstrated, such as the calibration curve of copper alloy samples.…”

Section: Introductionmentioning

confidence: 99%

“…A developed collinear long-short doublepulse laser-induced breakdown spectroscopy (LS-DP-LIBS) method was proposed to improve the accuracy and plasma stability using the long-pulse width laser in our previous works. [30][31][32][33][34] A significant difference of proposed LS-DP-LIBS is that the long-pulse width is tens or hundreds of ms compared with conventional DP-LIBS studies. The breakdown threshold cannot be reached to produce plasma using this long-pulse width laser only.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative Analysis of Manganese in Underwater Steel Samples Using Long–Short Double-Pulse Laser-Induced Breakdown Spectroscopy

et al. 2021

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The long–short double-pulse laser-induced breakdown spectroscopy (LS-DP-LIBS) method was applied to qualitative and quantitative analyses of underwater steel samples to improve the detection ability of underwater measurement. The stable plasma intensity and discrete emission lines were detected using LS-DP-LIBS when comparing the measured results of single-pulse LIBS (SP-LIBS) and LS-DP-LIBS. The long pulse produces a cavitation bubble without plasma, and the short pulse induces the plasma of steel samples within the bubble. The detection features of LS-DP-LIBS for underwater steel samples were discussed in different intra-pulse delay time, long-pulse width, and delay time conditions when analyzing the measured spectra, the signal intensity of Fe(I) at 400.524 nm and 402.187 nm, Mn(I) at 404.136 nm, and intensity ratio of Mn(I) 404.136 nm/Fe(I) 402.187 nm. The results indicated that the plasma stability and spectral signal intensity were improved significantly with a long-pulse width of 80 µs in the intra-pulse delay time of 70 µs, which were appropriate for bubble formation and plasma generation. According to the discussion of the delay time effect, the state of generated plasma was almost stable from 650 ns to 850 ns. Manganese (Mn) contents in steel samples were analyzed quantitatively when measuring five steel samples with different Mn contents using LS-DP-LIBS in optimal experimental conditions. A strong linear dependence was observed with R2=0.9842, which demonstrated the feasibility and appropriateness of quantitative analysis for underwater measurement using LS-DP-LIBS.

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Section: Comparison Of Sp-libs and Ls-dp-libsmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantitative Analysis of Manganese in Underwater Steel Samples Using Long–Short Double-Pulse Laser-Induced Breakdown Spectroscopy

et al. 2021

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“…The long and short double-pulse LIBS method was proposed by our group and it has been named as LS-DP-LIBS [28,29]. In previous studies [30,31], LS-DP-LIBS has been compared with SP-LIBS based on the measurement results in an air atmosphere. Those studies have demonstrated that the plasma is enhanced and stabilized by LS-DP-LIBS.…”

Section: Introductionmentioning

confidence: 99%

Signal Improvement for Underwater Measurement of Metal Samples Using Collinear Long-Short Double-Pulse Laser Induced Breakdown Spectroscopy

et al. 2020

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We employed a collinear long-short double-pulse laser induced breakdown spectroscopy (LS-DP-LIBS) to detect the underwater metal samples. The emission spectra, time-resolved signal, plasma images and sound characteristics of plasma shockwaves are experimentally investigated in this work. The results show that the underwater signal of Al, Cu and Fe spectral lines are significantly improved by collinear LS-DP-LIBS with inter-pulse delay of 35 us. The mechanism of the signal improvement is considered to be the pre irradiation effect of the long pulse laser beam. In the collinear LS-DP-LIBS method, the long pulse first generates a cavitation bubble in water and provides a gaseous environment. Then the short pulse generates the plasma from the sample surface. The present experiments show that the collinear LS-DP-LIBS method offers a significant signal improvement in underwater measurement of metal samples. This new method has great potential in deep-sea exploration using LIBS.

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Experimental study on the axial-infeed incremental warm rolling process for spline shaft production

Hou

Zhao

Cui

et al. 2021

Int J Adv Manuf Technol

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Carbon detection in solid and liquid steel samples using ultraviolet long-short double pulse laser-induced breakdown spectroscopy

Cited by 25 publications

References 37 publications

Quantitative Analysis of Manganese in Underwater Steel Samples Using Long–Short Double-Pulse Laser-Induced Breakdown Spectroscopy

Quantitative Analysis of Manganese in Underwater Steel Samples Using Long–Short Double-Pulse Laser-Induced Breakdown Spectroscopy

Signal Improvement for Underwater Measurement of Metal Samples Using Collinear Long-Short Double-Pulse Laser Induced Breakdown Spectroscopy

Experimental study on the axial-infeed incremental warm rolling process for spline shaft production

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