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Small-invasive determination of iron content in coating of galvanized steel sheets by laser-induced breakdown spectroscopy

Sun Lanxiang ^1,2 Wang Weiye ^1,2,3 Guo Meiting ^1,2 Tian Xueyong ⁴ Zhang Peng ^1,2,5 Qi Lifeng ^1,2 Yu Haibin ^1,2 Zeng Peng ^1,2

文摘	A new method was presented to determine the iron content in the coating of galvanized steel sheet based on laser-induced breakdown spectroscopy. The zinc–iron coating was characterized with a series of single laser pulses irradiated on the traversing sheet steel, each on a different steel sheet position. The influences of laser fluence and elemental depth distribution were studied and analyzed. To protect the corrosion performance of the coating and meet requirements for small-invasive measurement, the ablation size of the crater under different laser fluences was studied. Under the optimized experimental parameters, the diameter of ablation craters is about 50 lm, and then, the Fe content in the coating was calibrated and analyzed by the linear standard calibration method. The calibration result, however, is not good. Considering that the Zn content in the coating was high and relatively constant, curve calibration was then carried out with the intensity ratio (I_(Fe404:58)=I_(Zn468:01)) instead of the net line intensity of Fe, and then, the determination coefficient of calibration curve increases from 0.7713 to 0.9511, and the root-mean-square error decreases from 0.4832% to 0.1509%. The results prove that the laser-induced breakdown spectroscopy is an effective way for the analysis of the Fe content in the coating of galvanized steel sheet.
来源	Journal of Iron and Steel Research , International,2019,26(10):1137-1146 【核心库】
DOI	10.1007/s42243-019-00320-z
关键词	Laser-induced breakdown spectroscopy ; Galvanized steel sheet ; Quantitative analysis ; Small-invasive analysis ; Iron content
地址	1. Shenyang Institute of Automation,Chinese Academy of Sciences, Liaoning, Shenyang, 110016 2. Key Laboratory of Networked Control Systems,Chinese Academy of Sciences, Key Laboratory of Networked Control Systems,Chinese Academy of Sciences, Liaoning, Shenyang, 110016 3. Northeastern University, Liaoning, Shenyang, 110819 4. Central Research Institute,SIASUN Robot & Automation Co.,Ltd., Liaoning, Shenyang, 110168 5. University of the Chinese Academy of Sciences, Beijing, 100049
语种	英文
文献类型	研究性论文
ISSN	1006-706X
学科	冶金工业
基金	supported by the National Key Research and Development Program of China ; 国家自然科学基金 ; Shenyang Science and Technology Project ; the Key Research Program of Frontier Sciences, CAS ; the Youth Innovation Promotion Association, CAS
文献收藏号	CSCD:6600883

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