L. St-onge et M. Sabsabi, Towards quantitative depth-profile analysis using laser-induced plasma spectroscopy: investigation of galvannealed coatings on steel, SPECT ACT B, 55(3), 2000, pp. 299-308
Laser-induced plasma spectroscopy (LIPS) is applied to depth-profile analys
is, with the particular goal of examining how LIPS depth profiles can be fu
lly calibrated. For this purpose, we concentrate on the representative case
of galvannealed coatings on steel (i.e. annealed zinc-coated steel). In pa
rticular, a method is proposed wherein the second derivative of the zinc in
tensity profile enables the determination of the coating/substrate interfac
e position. Calibration for the major elements (iron and zinc) is based on
a non-linear relationship between the iron-to-zinc line intensity ratio and
the iron-to-zinc concentration ratio. Quantitative depth profiles of three
elements (Al, Fe and Zn) are obtained for two galvannealed samples. The ir
on profiles are found to be in broad agreement with those obtained by trans
mission electron microscopy/energy dispersive X-ray spectrometry, Crown Cop
yright (C) 2000 Published by Elsevier Science B.V. All rights reserved.