Determination of a brass alloy concentration composition using calibration-free laser-induced breakdown spectroscopy

被引:9
作者
Achouri, M. [1 ]
Baba-Hamed, T. [1 ]
Beldjilali, S. A. [1 ]
Belasri, A. [1 ]
机构
[1] Univ Sci & Technol Oran Mohamed Boudiaf USTO MB, LPPMCA, Oran 31000, Algeria
关键词
EXPERIMENTAL STARK WIDTHS; QUANTITATIVE ELEMENTAL ANALYSIS; INDUCED PLASMA SPECTROSCOPY; SPECTRAL-LINES; PREFERENTIAL VAPORIZATION; SELF-ABSORPTION; IONIZED ATOMS; PERIOD; 1976; SHIFTS; LIBS;
D O I
10.1134/S1063780X15090019
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Laser-induced breakdown spectroscopy (LIBS) is a technique that can provide qualitative and quantitative measurements of the characteristics of irradiated metals. In the present work, we have calculated the parameters of the plasma produced from a brass alloy sample under the action of a pulsed Nd: YAG laser operating at 1064 nm. The emission lines of copper atoms (Cu I), zinc atoms (Zn I), and lead atoms (Pb I), which are elements of a brass alloy composition, were used to investigate the parameters of the brass plasma. The spectral profiles of Cu, Zn, and Pb lines have been used to extract the electron temperature and density of the brass alloy plasma. The characteristics of Cu, Zn, and Pb were determined quantatively by the calibration-free LIBS (CF-LIBS) method considering for accurate analysis that the laser-induced ablated plasma is optically thin in local thermodynamic equilibrium conditions and the plasma ablation is stoichiometric. The Boltzmann plot method was used to evaluate the plasma temperature, and the Stark broadened profiles were used to determine the electron density. An algorithm based on the experimentally measured values of the intensity of spectral lines and the basic laws of plasma physics was developed for the determination of Cu, Zn, and Pb concentrations in the brass sample. The concentrations C (CF-LIBS) calculated by CF-LIBS and the certified concentrations C (certified) were very close.
引用
收藏
页码:758 / 768
页数:11
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