Quantitative Elemental Analysis Of LIBS Based On The Calibration-Free Method

Metal elemental concentrations in alloys are important indices of alloy quality. The investigation on the Powerful laser induced micro-plasma by the radiation focused on alloy surface plays an important role in metallurgy industrial applications.Elemental analysis based on the emission from plasma generated by focusing a solid sample surface is known as laser-induced breakdown spectroscopy (LIBS). LIBS could accurately measuring elemental concentrations and will be helpful to improve the efficiency of real-time online examination of alloy product in metallurgical industry. In addition, in some special environments, like high temperature, radiation and so on, traditional exploration techniques such as titration, spectrophotometry, X-ray fluorescence spectrometry, etc, all are complicated, time-consuming, unable to be used online and difficult to conduct multi-elemental analysis. The laser-induced breakdown spectroscopy (LIBS) technique was therefore proposed to quantitatively analyze of alloys.In this article, the basic principles and theoretical and application-oriented studies of LIBS were summarized; quantitative analytical methods of LIBS were described; the experimental devices and samples were introduced; then carried on qualitative analysis and used the calibration-free standard method for alloys quantitative analysis were used to analyze 3 alloy samplesFinally, a summarization of the article was put forwarded. Problems pertaining to quantitative measurements of alloys by means of the LIBS technique were pointed out. Suggestions for further research were given.