Determination of Carbon Content in Steel Using Laser-Induced Breakdown Spectroscopy

Abstract

Laser-induced breakdown spectroscopy has been used to determine carbon content in steel. The plasma was formed by focusing a Nd:YAG laser on the sample surface. With the use of time-resolved spectroscopy and generation of the plasma in nitrogen atmosphere, a precision of 1.6% and a detection limit of 65 ppm have been obtained. These values are similar to those of other accurate conventional techniques. Matrix effects for the studied steels are reduced to a small slope difference between the calibration curves for stainless and nonstainless steels.

Multivariate analysis of laser-induced breakdown spectroscopy chemical signatures for geomaterial classification

“…LIBS is an emerging technology for real-time chemical analysis that has found application in a variety of industrial [1][2][3][4][5], cultural [6][7] and security [8][9][10][11] applications and presently is under development for extraterrestrial exploration [12][13][14]. Over the past two decades, there have been a variety of applications of LIBS to geological materials, mostly focused on quantitative determination of a few elements [15][16][17][18][19][20][21][22][23][24][25].…”

Use of the vacuum ultraviolet spectral region for laser-induced breakdown spectroscopy-based Martian geology and exploration

“…LIBS experiments using the VUV region have been reported previously. In 1992, Aguilera et al initiated LIBS investigations in the VUV by describing the application to the analysis of steels [8]. Other studies of steel by Sturm et al [9], Khater et al [10], and Hemmerlin et al [11] followed.…”

Laser-induced breakdown spectroscopy (LIBS): an emerging field-portable sensor technology for real-time chemical analysis for military, security and environmental applications

“…In this context, most applications of LIBS to material analysis have been directed toward the semi-quantitative or quantitative determination of a small number of trace elements in a material of roughly constant bulk composition (Aguilera et al, 1991;Grant et al, 1991;Sabsabi and Cielo, 1995;Geertsen et al, 1996;Barbini et al, 1997;Panne et al, 1998;Galbacs et al, 2001;Leobe et al, 2003;Ismail et al, 2004;Sturm et al, 2004). Recently, however, there has been a growing interest in the application to LIBS to the analysis of hazardous and environmental materials for which this approach is not feasible.…”