作　　者： ; ; ; ; ; ; ;

机构地区： 华南理工大学电力学院

出　　处： 《华南理工大学学报（自然科学版）》 2011年第1期63-67,共5页

摘　　要： 搭建了一套基于激光诱导击穿光谱技术的钢液成分直接测量实验系统,针对钢液表面被空气氧化的问题进行了实验,评估了氧化层对测量结果的影响.在此基础上,利用氩气作为保护气,对比分析了不同氩气流量下,钢液内各元素谱线强度和测量稳定性的变化趋势.结果表明:钢液氧化会令大部分合金元素在表面富集,从而使相关谱线的相对强度增大,因此不宜在大气环境下进行钢液成分的直接测量;而选择合适流量的氩气作为保护气可以实现稳定的钢液成分直接测量. In this paper,first,an experiment system to directly analyze the components of liquid steel was built based on laser-induced breakdown spectroscopy.Next,the process of aerobic oxidization on liquid steel surface was tested.Then,the influence of oxidation layer on the measurement results was discussed.Finally,the variation of the emission-line intensity of each element,as well as that of the measurement stability with the flowrate of inlet gas Ar was analyzed.The results show that the direct measurement of components of liquid steel should not be performed in atmospheric conditions because the relative intensities of emission lines may improve due to the oxidation-induced accumulation of most alloying elements on liquid steel surface,and that Ar gas with appropriate flowrate is suitable for the direct measurement.

关 键 词： 钢液 直接测量 激光诱导击穿光谱 氧化 氩气

领　　域： [理学] [理学] [冶金工程]