EDX法分析钼铁中Mo等成分的研究  

Study on the Determination of Molybdenum and Other Elements in Ferromolybdenum Alloy by EDX

作　　者：李岩[1] 董秀文[1] 于志伟[2] 

机构地区：[1]辽宁出入境检验检疫局,辽宁大连116001 [2]大连海事大学,辽宁大连116026

出　　处：《光谱学与光谱分析》2007年第7期1444-1447,共4页Spectroscopy and Spectral Analysis

基　　金：辽宁出入境检验检疫局项目资助

摘　　要：近期铁合金市场上出现了一些Mo含量很低的高杂质钼铁,采用常规化学法分析,由于杂质元素的共沉淀,Mo的分析结果与冶炼所得钢材的Mo含量相差很大,说明经典的化学法并不适用于高杂质钼铁的Mo含量分析。文章用能量色散X射线荧光法(EDX)分析了钼铁中的Mo等主要成分,研究了制样方法对分析结果的影响,将扫描电镜用于分析样品的表面形貌观察。试验结果表明,EDX可以用于钼铁中Mo和Si的分析,而P,S和Cu未能检出。样品表面形貌对分析结果有一定的影响,通过扫描电子显微镜(SEM)观察发现,将研磨后的钼铁粉末用较大的载荷压成片状样品,变成平坦、光滑的分析表面,可进一步提高Mo的检测精度。Some kinds of the high impurity ferromolybdenum alloy occurred in the ferroalloy market recently. The analysis result of the element Mo in high impurity ferromolybdenum alloy is not accurate using the routine chemical method, because of the coprecipitation of the impurity elements, compared with the final Mo content of poured steel ingots. The energy dispersive X-ray spectroscopy （EDX） was applied to the analysis of ferromolybdenum alloy. The results show that EDX is an appropriate way to the determination of element Mo and Si in ferromolybdenum alloy, but can not be used to analyze element P, S and Cu. As the morphology of the sample has a strong influence on the analysis results, scanning electron microscope （SEM） was used to observe the morphology of the sample. The detection precision of the element shall be raised, when the powder sample of the ferromolybdenum alloy are pressed into thinner disc sample using hydraulic universal testing machine.

关 键 词：EDX 钼铁 SEM 压片样品 

分 类 号：O657.3[理学—分析化学]