The chemical composition of alloys directly determines their mechanical behaviors and application fields. Accurate and rapid analysis of both major and minor elements in alloys plays a key role in metallurgy quality c...The chemical composition of alloys directly determines their mechanical behaviors and application fields. Accurate and rapid analysis of both major and minor elements in alloys plays a key role in metallurgy quality control and material classification processes. A quantitative calibration-free laser-induced breakdown spectroscopy（CF-LIBS） analysis method, which carries out combined correction of plasma temperature and spectral intensity by using a secondorder iterative algorithm and two boundary standard samples, is proposed to realize accurate composition measurements. Experimental results show that, compared to conventional CF-LIBS analysis, the relative errors for major elements Cu and Zn and minor element Pb in the copperlead alloys has been reduced from 12%, 26% and 32% to 1.8%, 2.7% and 13.4%, respectively.The measurement accuracy for all elements has been improved substantially.展开更多
基金financially supported by the National Key Research and Development Program of China(No.2017YFA0304203)the Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China(No.IRT13076)+3 种基金National Natural Science Foundation of China(Nos.61475093,61378047,61775125)the Shanxi‘1331 Project’Key Subjects Constructionthe Major Special Science and Technology Projects in Shanxi Province(No.MD2016-01)the State Key Lab of Power Systems for technical contribution and financial support
文摘The chemical composition of alloys directly determines their mechanical behaviors and application fields. Accurate and rapid analysis of both major and minor elements in alloys plays a key role in metallurgy quality control and material classification processes. A quantitative calibration-free laser-induced breakdown spectroscopy（CF-LIBS） analysis method, which carries out combined correction of plasma temperature and spectral intensity by using a secondorder iterative algorithm and two boundary standard samples, is proposed to realize accurate composition measurements. Experimental results show that, compared to conventional CF-LIBS analysis, the relative errors for major elements Cu and Zn and minor element Pb in the copperlead alloys has been reduced from 12%, 26% and 32% to 1.8%, 2.7% and 13.4%, respectively.The measurement accuracy for all elements has been improved substantially.
