Process for coating discrete articles with a zinc-based alloyed layer

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United States of America Patent

PATENT NO 8895106
SERIAL NO

13147674

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Abstract

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The present disclosure concerns a process suitable for coating discrete articles with a zinc-rich, fully alloyed layer. A known method for the corrosion-protection of such articles comprises the steps of hot-dip galvannealing, typically followed by painting. This hot-dip process has however to be performed at a high temperature, thereby submitting the articles to severe thermal stress. A novel vacuum deposition process of Zn is therefore presented. It is characterized in that, in the step of contacting the article with metallic Zn vapor, the temperature of the article is equal to or higher than the dew point of the Zn vapor. The process results in a coating having a uniform thickness, even on less accessible surfaces. The surface roughness is well adapted for the adhesion of paint.

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Patent Owner(s)

Patent OwnerAddress
UMICORE1000 BRUSSELS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gay, Bruno Brussels, BE 5 5
Petit, Etienne Marly, FR 4 4

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