基于无标样分析软件的X射线荧光光谱法测定金刚石刀头成分

金刚石刀头的成分分析,对于改进生产配方,提高金刚石刀头的切割效率和切割寿命具有重要意义。对于不同的切割对象,需要不同性能的金刚石刀头,从而导致金刚石刀头成分复杂多变,再加上缺乏标样等因素,研究报道相对较少。实验利用X射线荧光光谱法(XRF)的无标样半定量软件对金刚石刀头中的骨架元素Fe、Cu、Zn、Sn进行检测,解决了常规化学方法检测耗时长、步骤多、污染环境等问题,提高了检测效率。重点讨论了硼酸压片的作用、误差来源分析、谱线重叠与基体效应校正等内容。精密度实验表明,Fe、Cu、Zn、Sn测定结果的相对标准偏差(RSD,n=10)分别为0.29%、0.71%、1.8%、6.5%。正确度考察发现本法的半定量结果与常规标准方法基本一致,满足使用要求。实验方法可以同时对金刚石刀头中的多组分进行快速准确测定,半定量结果达到了近似定量的程度。

Determination of diamond knife head composition by X-ray fluorescence spectrometry based on analysis software without standard sample

The composition analysis of diamond knife head is of great significance for improving the production formula and enhancing the cutting efficiency and cutting life of diamond knife head. For different cutting objects, the diamond knife head with different properties is required, which leads to complex and changeable composition of diamond knife head. Moreover, due to the lack of standard samples, there are only few researches and reports. The skeleton elements (Fe, Cu, Zn and Sn) in diamond knife head were detected using the semiquantitative software without standard sample of X-ray fluorescence spectrometry (XRF). It solved the problems in conventional chemical methods such as time consuming, many steps and environmental pollution, and improved the detection efficiency. The function of boric acid tablets, error source analysis, spectral overlapping and and matrix effect correction were discussed. The precision experiments showed that the relative standard deviation (RSD) for Fe, Cu, Zn and Sn was 0.29%, 0.71%, 1.8% and 6.5%, respectively. The accuracy experiments showed that the semiquantitative results by proposed method were basically consistent with those obtained by traditional standard methods, which could meet the use requirements. The proposed method was applied for the rapid, accurate and simultaneous determination of multi-components in diamond knife head. The semi-quantitative results reached the degree of approximate quantification.