Quantitative X-ray analysis for Cr–Fe binary ferroalloys by using EDXRF−WDXRF techniques

Resumo

Quantitative analysis of materials is significant for its potential usage in different areas. In the present study, quantitative analysis for Fe–Cr binary ferroalloys was evaluated by using Energy Dispersive X-Ray Fluorescence (EDXRF) system and the classical α-coefficient equation. The ferroalloys were prepared from powder form of Fe and Cr elements. The ferroalloys were excited by 59.54 keV γ-rays from ²⁴¹Am annular radioactive source in EDXRF and K_α X-ray fluorescence spectra of Fe were analyzed in the binary matrices for determining analyte element Fe. Also, Wavelength Dispersive X-Ray Fluorescence (WDXRF) system was used to compare the concentrations of the analyte. The agreement was found to be quite satisfactory between the EDXRF and WDXRF (≤1.76 relative difference (%) between concentrations), and it should be noted that the classical α-coefficient equation is highly reliable approach for quantitative analysis of ferroalloys. In addition, effective atomic numbers (Z_eff) of alloys were calculated using scattering ratio (R/C) method and fitted to concentrations obtained of alloys for fit equation.