硼酸盐熔珠-X射线荧光光谱法分析高合金钢

摘要

采用直读光谱法(OES-Spark)、X射线荧光光谱法(XRF)以及电感耦合等离子体发射光谱法(ICP-OES)测定高合金钢中高含量的元素时,吸收增强效应、晶粒尺寸效应、冶金相组成的不同点、元素间干扰(OES-Spark、XRF)以及较低精密度(ICP-OES)等相关因素都会影响结果的准确性.将样品制备成硼酸盐熔珠后进行检测可以带来很多优势,例如消除相组成和冶金晶粒尺寸效应的影响、对夹杂物(氧化物,氮化物,碳化物)以及任何形状和任何数量的样品进行处理时的高均匀性.本研究开发了一种样品制备的新方法,并将该方法应用于高合金钢标准样品(CRM)的XRF测定中.%When elements of high concentration in high-alloyed steel are determined by OES-Spark , X-ray fluorescence spectrometry (XRF) and inductively coupled plasma optical emission spectrometry (ICP-OES) , absorption enhancements, grain size effects, differences in metallurgical phases composition, inter-elemental interferences (OES-Spark and XRF) and poor precision (ICP-OES) affect the accuracy of the response. The preparation of samples as borate beads would lead to many advantages, i. e. elimination of phase composition and metallurgical grain-size effects, high homogeneity and dissolution of inclusions (oxides, nitrides, carbides) and treatment of any shape and amount of sample. In this work, a new method of preparation has been developed. The experimental trials have been conducted in determination of high-alloyed steel international certified materials by XRF.