铝合金中Mn元素数字化可见光谱分析技术研究

Digital Visible Spectrum Analysis of Mn in Al Alloy

利用可见光谱数字化分析系统将铝合金中Mn元素Mn475.40 nm分析谱线组谱图转变为数字化的电子谱图,使用计算机自动分析代替人眼视觉判断,研究了数字化系统指导视场定位和谱线辨别的途径,解决了谱图的量化分析和记录难题,降低了可见光谱分析的技术难度并提高了快速分析的可靠性。对4种不同Mn元素含量的铝合金样品进行了数字化分析测定,探索了选用Mn475.40 nm谱线作为分析谱线,选用Cu470.46 nm谱线作为比较谱线进行定量测定的方法,数据显示分析谱线和比较谱线的强度比值与Mn元素含量成正比关系。结果表明:数字化技术保持快速分析特点的同时可以达到定量分析目的,能够有效解决铝合金中Mn元素的快速定量分析及材料牌号鉴别问题。

The application of visible spectrum of digital analysis system enables the digitalization of electronic spectrum of Al alloy of manganese Mn475.40 nm. And the replacing of the human visual judgment by computer aided analyses facilitates the spectrum quantification and solution to the problems associated with the record- ing. The study of how to employ digital system to guide the visual location and the spectrum identification aids in reducing the technical difficulties and improving the reliability of the quick analysis. The digital analysis of the four samples of the A1 alloy with different content of Mn, and the probe into the quantitative analysis that employs the spectrums of Mn475.40 nm as the analysis spectrum, Cu470.46 nm as comparison spectrum, indicate the positive relationship between the content of manganese and the intensity ratio of the analysis and comparison of spectrum. The results indicate that the digital technique can help achieve the quantitative analysis, while keeping the advantages of the quick analysis. Consequently, this provides an effective solution for rapid quantitative analysis and identification of trademark.