Pitting Corrosion of Hot-Dip Galvanized Coatings

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ID: 111740
2020
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Abstract
Lead (Pb) addition to hot-dip galvanizing (HDG) baths affects the physical characteristics of zinc coatings and is also useful to protect kettles. The influence of lead additions on both corrosion rate and morphology as well as on structure of zinc coating is less investigated. In this paper, three different additions, (Pb = 0.4–0.8–1.2 w/w) were chosen for three series of steel substrates, plus references without lead. The three steels chosen as substrates contained silicon (Si) = 0.18, 0.028, 0.225 w/w, respectively. The experimental part included both macro- and micro-electrochemical measurements, weight loss vs. time plots, Glow Discharge Optical Emission Spectroscopy (GDOS) and SEM/EDX microanalysis of both surface and cross-section of samples. Lead concentration is responsible for evident bimetallic coupling in the surrounding of lead inclusion with consequent increased dissolution rate, chunk effect, and rougher surface morphology.
Reference Key
królikowska2020materialspitting Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Agnieszka Królikowska;Leszek Komorowski;Pier Luigi Bonora;Królikowska, Agnieszka;Komorowski, Leszek;Bonora, Pier Luigi;
Journal Materials (Basel, Switzerland)
Year 2020
DOI
10.3390/ma13092031
URL
https://www.mdpi.com/1996-1944/13/9/2031##overview
Keywords
corrosion hdg coating lead in hdg bath silicon in steel National Center for Biotechnology Information NCBI NLM MEDLINE pubmed abstract nih national institutes of health national library of medicine pmid:32357491 pmc7254233 doi:10.3390/ma13092031 agnieszka królikowska leszek komorowski pier luigi bonora

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