The Properties of ZnAlMg Alloys for Batch Hot Dip Metallization

Abstract:

In the paper the melting point of Zn-Al alloys with the addition of Mg has been determined, based on solidification curves. The alloys used for the tests were alloys containing 7, 15, 23 and 31 wt.% Al with the addition of 3 or 6 wt.% Mg. It has been determined that the solidification temperature of the ZnAlMg alloy is a synergistic effect of the Al and Mg contents. In alloys with lower contents of Al (7, 15 wt.% Al) an increase in the content of Mg leads to an increase of the melting point. In baths with higher contents of Al (23, 31 wt.% Al) the addition of Mg causes a decrease of the melting point. It has been determined that the melting point of the Zn-31Al6Mg alloy drops to 438°C, due to which the alloy can be used for metallization in temperature conditions close to the temperature of traditional hot dip galvanizing.

• Periodical: Solid State Phenomena (Volume 246)
• Pages: 143-148
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.246.143
• Online since: February 2016
• Authors: Krzysztof Nowacki, Henryk Kania*, Jakub Wieczorek, Albert Smalcerz
• Keywords: Galvanizing Bath, Hot Dip Galvanizing, Zn-Al Coatings

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