Analysis of Al in Zn Hot Dip Galvanizing Bath Sample by X-ray Fluorescence Spectrometry

Abstract

In the production of Zn hot dip galvanized steel sheets, the concentration of Al in the galvanizing bath must be maintained within a limited range to ensure optimum performance. For this purpose, an accurate and rapid determination of Al by X-ray fluorescence spectrometry was studied. The results were as follows:
(1) The AlKα line intensity increased with the lapse of time after sample preparation because of the enrichment of Al near the surface of the sample.
(2) An accurate and rapid analysis was performed by preparing a sample with an SiC abrasive paper of coarse grit size 40 and by starting the X-ray intensity measurement after a brief 3 min lapse of time following the sample preparation.