Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1652727 | Materials Letters | 2010 | 4 Pages |
Abstract
The combined effect of nickel and bismuth on the structure and the morphology of zinc hot-dip galvanized coatings were studied with optical microscopy, scanning electron microscopy and X-ray diffraction. From this investigation it turned out that the coating produced from a zinc melt containing 1% Ni and 1% Bi is composed of three layers corresponding to δ- and η-phase of the Fe–Zn system and T-phase of the Fe–Zn–Ni system. Bi was not detected in these phases. However inclusions of this element were identified between the grains of the T-phase. Their presence could negatively affect the corrosion performance of the coating because bismuth is cathodic to zinc.
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Authors
N. Pistofidis, G. Vourlias, S. Konidaris, El. Pavlidou, G. Stergioudis,