Volume 23, Issue 2 (1-2005)                   jame 2005, 23(2): 173-184 | Back to browse issues page

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K. Raeissi, A. Saatchi and M. A. Golozar. Effect of Current Density and Surface Preparation of Steel on Morphology and Texture of Zinc Electrodeposits. jame 2005; 23 (2) :173-184
URL: http://jame.iut.ac.ir/article-1-325-en.html
Abstract:   (6333 Views)
On electropolished steel at low current densities, morphology and texture of electrodeposited zinc were investigated. Zinc coating is consisted of hexagonal crystallites laid on each other to produce packets. These packets are of different sizes and are stacked in different orientations to construct a homogeneous coating on steel substrate. This coating does not have texture, i.e., it has a random texture. With increasing current density, the morphology changes completely as each grain attains a special orientation. In this case, coating has a strong basal plane (0002) along with low angle planes (1013 and 1014). Coating obtained on mechanically polished surfaces consists of individual packets of zinc crystals, which are near each other with different orientations. These coatings have a higher density of basal plane (0002) in comparison to electropolished surfaces. The morphology and texture variations with cathodic polarization and surface preparation of steel are due to their effect on nucleation and growth.
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Type of Study: Research | Subject: General
Received: 2014/10/25 | Published: 2005/01/15

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