Publisher’s version / Version de l'éditeur:
Proceedings of the 4th Euro-Mediterranean Symposium dedicated to Laser Induced Breakdown Spectroscopy, 2007
READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.
https://nrc-publications.canada.ca/eng/copyright
Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n’arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca.
Questions? Contact the NRC Publications Archive team at
PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information.
NRC Publications Archive
Archives des publications du CNRC
This publication could be one of several versions: author’s original, accepted manuscript or the publisher’s version. / La version de cette publication peut être l’une des suivantes : la version prépublication de l’auteur, la version acceptée du manuscrit ou la version de l’éditeur.
Access and use of this website and the material on it are subject to the Terms and Conditions set forth at
Analysis of additives and intermetallic inclusions in molten zinc by laser-induced breakdown spectroscopy (LIBS)
Sabsabi, Mohamad; Héon, René; Bouchard, Paul; Meilland, Raymond; Lamandé, Alain
https://publications-cnrc.canada.ca/fra/droits
L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D’UTILISER CE SITE WEB.
NRC Publications Record / Notice d'Archives des publications de CNRC:
https://nrc-publications.canada.ca/eng/view/object/?id=ef9cc4c7-64a5-4f14-bb29-210158417aec https://publications-cnrc.canada.ca/fra/voir/objet/?id=ef9cc4c7-64a5-4f14-bb29-210158417aec
Analysis of additives and intermetallic inclusions in molten zinc
by laser-induced breakdown spectroscopy (LIBS)
Mohamad Sabsabi, René Héon, Paul Bouchard
National Research Council Canada - Industrial Materials Institute 75 de Mortagne Blvd, Boucherville, Québec, CANADA J4B 6Y4 and
Raymond Meilland, and Alain Lamandé. Arcelor Research SA
F-57283 Maizières-lès-Metz France
Presently, charge compositions in many industrial processes are monitored by periodic sampling followed by time-consuming sample preparation and laboratory analysis. Conventional analysis methods of today are off-line and discontinuous. The required steps for analysis involve taking a sample from the molten metal, solidification of the sample, transport of the sample to a central laboratory, sample preparation and finally analysis, e.g. by spark optical emission spectrometry (spark OES) or similar methods. Furthermore, inhomogeneities from phase segregation on solidification may compromise the accuracy of solid sample analysis as a measure of melt composition. Laser-induced breakdown spectroscopy (LIBS) is an analytical technique capable of providing a continuous in-situ analysis of molten metals.
In the present work, LIBS has been performed through a gas fed lance producing bubbles inside molten metal, to thereby analyze molten materials in a pilot furnace. Parameters affecting the LIBS spectra from the molten material were investigated. The LIBS analytical performance (sensitivity, reproducibility, precision etc.) for the measurement of dissolved Al and Fe in conditions of galvannealing or galvanizing baths was found entirely satisfactory. The detection of magnesium, lead and tin is also feasible with simplified LIBS system. Evidence has also been confirmed that occasional large values of the LIBS intensity ratio (spikes) are related to the presence of intermetallic particles in the volume probed by LIBS, which can also be identified and assigned to bottom or top dross. This information will provide a means of characterizing transitions between galvannealing and galvanizing baths (or vice-versa) in real processing conditions and also the cleanness of the molten zinc.
