Open AccessCarbon determination in carbon-manganese steels under atmospheric conditions by Laser-Induced Breakdown Spectroscopy
Author(s) -
Timur A. Labutin,
Sergey M. Zaytsev,
A. M. Popov,
Н. Б. Зоров
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.022382
Subject(s) - laser induced breakdown spectroscopy , materials science , carbon fibers , spectroscopy , analytical chemistry (journal) , plasma , laser , emission spectrum , combustion , calibration , manganese , spectral line , optics , metallurgy , chemistry , composite material , physics , organic chemistry , chromatography , quantum mechanics , astronomy , composite number
The most sensitive lines of carbon, used nowadays for its determination in steels by laser-induced-breakdown spectroscopy (LIBS), are at vacuum UV and, thereby, LIBS potential is significantly reduced. We suggested the use of the C I 833.51 nm line for carbon determination in low-alloy steels (c(C)~0.186-1.33 wt.%) in air. Double-pulse LIBS with the collinear scheme was performed for maximal enhancement of a carbon emission signal without substantial complication of experimental setup. Since this line is strongly broadened in laser plasma, it overlapped with the closest iron lines greatly. We implemented a PCR method for the construction of a multivariate calibration model under spectral interferences. The model provided a RMSECV = 0.045 wt.%. The predicted carbon content in the rail templet was in an agreement with the reference value obtained by a combustion analyzer within the relative error of 6%.