On The Effect Of Zinc Melt Composition On The Structure Of Hot-Dip Galvanized Coatings

Journal Article · Mon Apr 23 04:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2733537· OSTI ID:21057283

Konidaris, S; Pistofidis, N; Vourlias, G; Pavlidou, E; Stergiou, A; Stergioudis, G; Polychroniadis, E K ^[1]

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1. Physics Department, Aristotle University of Thessaloniki, 54 124 Thessaloniki (Greece)

Zinc hot-dip galvanizing is an effective method for the corrosion protection of ferrous materials. A way of improving the results is through the addition of various elements in the zinc melt. In the present work the effect of Ni, Bi, Cr, Mn, Se and Si at concentration of 0.5 or 1.5 wt.% was examined. Coupons of carbon steel St-37 were coated with zinc containing the above-mentioned elements and were exposed in a Salt Spray Chamber (SSC). The micro structure of these coatings was examined with SEM and XRD. In every case the usual morphology was observed, while differences at the thickness and the crystal size of each layer were induced. However the alloying elements were present in the coating affecting its reactivity and, at least in the case of Mn and Cr, improving corrosion resistance.

• OSTI ID: 21057283
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 899; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH ADDITIONS
CARBON STEELS
CORROSION
CORROSION PROTECTION
CORROSION RESISTANCE
CRYSTAL STRUCTURE
CRYSTALS
HOT DIPPING
LAYERS
MANGANESE ADDITIONS
MICROSTRUCTURE
MORPHOLOGY
NICKEL ADDITIONS
PROTECTIVE COATINGS
SCANNING ELECTRON MICROSCOPY
SILICON ADDITIONS
SURFACE TREATMENTS
X-RAY DIFFRACTION
ZINC
ZINC ALLOYS