Quantitative elemental analysis of nickel alloys using calibration-based laser-induced breakdown spectroscopy

G. P. Gupta, B. M. Suri, A. Verma, M. Sundararaman, V. K. Unnikrishnan, K. Alti, V. B. Kartha, C. Santhosh

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

This work reports on the quantitative elemental analysis of nickel alloys using laser-induced breakdown spectroscopy (LIBS) in air at atmospheric pressure. The LIBS plasma is generated using a Q-switched ultraviolet Nd:YAG laser, which evolves with time. The LIBS spectra of three samples with known composition are recorded at five detector gate delays. Employing the internal standardization method, the calibration curves for Cr present in the samples are produced. The Cr concentration in the samples is determined using the generated linear calibration curves having varying slopes and regression coefficients at different delays. The effect of slopes and regression coefficients of the linear calibration curves on the analytical predictive capability of the LIBS system is studied through the correlation of the LIBS determined concentration of Cr with its known value. The analytical predictive capability of the LIBS system is noted to be the best when the calibration-based analysis is performed at an appropriate delay (2000 ns in the present experiment) where the linear calibration curve has both the regression coefficient and the slope close to the ideal value.

Original languageEnglish
Pages (from-to)3740-3745
Number of pages6
JournalJournal of Alloys and Compounds
Volume509
Issue number9
DOIs
Publication statusPublished - 03-03-2011

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Laser induced breakdown spectroscopy
Nickel alloys
Calibration
Chemical analysis
Standardization
Atmospheric pressure
Detectors
Plasmas
Lasers
Air

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

Cite this

Gupta, G. P. ; Suri, B. M. ; Verma, A. ; Sundararaman, M. ; Unnikrishnan, V. K. ; Alti, K. ; Kartha, V. B. ; Santhosh, C. / Quantitative elemental analysis of nickel alloys using calibration-based laser-induced breakdown spectroscopy. In: Journal of Alloys and Compounds. 2011 ; Vol. 509, No. 9. pp. 3740-3745.
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Quantitative elemental analysis of nickel alloys using calibration-based laser-induced breakdown spectroscopy. / Gupta, G. P.; Suri, B. M.; Verma, A.; Sundararaman, M.; Unnikrishnan, V. K.; Alti, K.; Kartha, V. B.; Santhosh, C.

In: Journal of Alloys and Compounds, Vol. 509, No. 9, 03.03.2011, p. 3740-3745.

Research output: Contribution to journalArticle

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