Abstract：In order to expand the application of self-developed sequential scanning wavelength dispersive X-ray fluorescence spectrometer in testing of iron-based alloys, the method for direct and rapid analysis of 16 common elements was developed. The proposed method could cover various types of iron-based alloy samples. The measurement conditions, spectral interference correction, intensity characterization and matrix correction methods were investigated. The surface of sample was treated in experiments using milling machine. Proper conditions were set for each element in the analysis of samples. Then the working curves were prepared in software by experiential coefficient method and Alpha coefficient method, respectively. The standard error of estimate (SEE) was adopted as the evaluation basis of curve quality. The matrix correction methods of elements were confirmed through the values of SEE. Finally, the repeatability and trueness were investigated by selecting typical samples. The results showed that the proposed method had good trueness, precision and limit of detection whether for major elements (Fe, Cr, Ni and Mn) or minor elements (Al, Si, P, S, Ti, V, Co, Cu, Zr, Nb, Mo and W). Moreover, the determination range was wide. The experimental results indicated that the proposed method could meet the requirements of routine testing in the analysis field of iron-based alloys.
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