Determination of Insoluble Aluminum Content in Steels by Laser-induced Breakdown Spectroscopy Method
The insoluble aluminum content in steels has an important influence on the quality of the steel.In this paper,laser-induced breakdown spectroscopy(LIBS)was used to analyze the insoluble aluminum content in steel samples with scanning mode.The threshold value which was used to distinguish soluble and insoluble aluminum was calculated by an iteration method.In this method the value of summation of the average intensity and 2.5 times of standard deviations was iterated.Total and soluble aluminum content calibration curves were generated and can be used for the determination of the total and soluble aluminum contents in steel samples.The insoluble aluminum content could be calculated by subtracting the soluble aluminum content from the total aluminum content.The insoluble aluminum contents in standard spectrum steel samples and real steel samples were rapidly determined using this mathematical model.The results agreed well with the value obtained by chemical methods.
laser-induced breakdown spectroscopy insoluble aluminum content threshold value
Li Dongling Zhang Yong Liu Jia Jia Yunhai
Central Iron & Steel Research Institute Group,Beijing 100081,China Sichuan University,Chengdu 100088,China
国内会议
上海
英文
1-6
2015-10-21(万方平台首次上网日期,不代表论文的发表时间)