Determination of the Content of Impurity Elements in Aluminum Alloy by XRF Analysis

Aluminum alloy is one of the most widely used metal materials in today’s society. Measurement and analysis of its impurity elements can effectively improve the performance of aluminum alloy. Energy dispersive X-ray fluorescence spectrometry (EDXRF) was used to analyze the types and contents of impurity elements in aluminum alloys, and the best working conditions for the EDXRF analyzer to measure impurity elements in aluminum alloys were determined. The absorption and enhancement effect of Al, Zn, Cu on impurity elements in Ti, Cr, Mn, Fe, Cu, Zn in aluminum alloy was discussed, and the empirical coefficient method was used to correct it. The analytical precision of EDXRF was evaluated. The data show that the average relative errors of the impurity elements in the aluminum alloy are Ti: 7.50%, Cr: 2.48%, Mn: 0.99%, Fe: 3.49%, Cu: 0.44%, Zn: 0.14%, respectively. It shows that the XRF measurement method is feasible and the accuracy meets the requirements of engineering design.