摘要
为实现钢铁成分的原位分析,利用激光器和光谱仪组建了激光诱导击穿光谱(LIBS)试验平台,设计了多维度调节不共轴光路并开发了设备驱动、元素谱峰搜索和元素成分定量分析软件。通过选择元素的最优谱线和最优内标线对所选取的21个样本中碳、锰、硅、铬、镍、铜进行LIBS分析试验。结果表明,上述6种元素的相关系数均在0.910以上。从21个样本中选取铜、硅、锰3种元素含量相近的12个样本进行试验,结果表明:其相关系数均有提高,其中锰的相关系数提高至0.975,硅提高至0.963。但在此条件下测定硫、磷时,其相关系数仅为0.256,0.682,对此尚须进一步研究。此外,还对样品温度对被测元素谱线强度的影响规律作了初步试验。
Aiming to the purpose of study on in-situ steel analysis for componental elements,an experimental platform of laser induced breakdown spectroscopy（LIBS）was established by using laser and spectrometer.A multidimensional non-coaxial optical path was designed and softwares for equipment driving,for searching for spectral peaks of the elements,and for quantitative analysis of steel for its componental elements were developed.The 21 samples with different contents of C,Mn,Si,Cr,Ni,Cu were chosen for testing by LIBS.Through optimization of choice of analytical spectral lines and spectral lines of internal standard,satisfactory correlationships were obtained with correlation coefficients of the 6 elements all over 0.910.From the 21 samples,12 samples with closer contents of Cu,Si and Mn were chosen for a further study on the correlationships,and it was found that the correlation coefficients of the 3 elements were raised significantly,for example values for Mn and Si were raised to 0.975 and 0.963 respectively.But in the determination of S and P under the same condition,correlation coefficients of 0.256,0.682 respectively were found.This problem was remained to be studied further.In addition,the rule of effect of temperature of sample on the intensity of spectral line of the element was tested preliminarily.
出处
《理化检验（化学分册）》
CSCD
北大核心
2017年第11期1271-1275,共5页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
河北省自然科学基金(E2016318007)
关键词
激光诱导击穿光谱
成分分析
钢铁
laser induced breakdown spectroscopy
componental analysis
steel
