Hot dip Zn-5Al coatings with improved corrosion resistance of reinforcement steel

The article presents the results of tests of Zn-5Al coatings obtained on reinforcement bars made of B500SP steel. The microstructure using Scanning electron microscopy (SEM) and chemical composition in micro-regions using Energy dispersive spectroscopy (EDS) are shown. The electrochemical parameters...

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Autor principal:	A. Marek
Formato:	article
Lenguaje:	EN
Publicado:	Croatian Metallurgical Society 2022
Materias:	coating hot dip galvanizing Zn-5Al corrosion resistance X-ray research Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/a411c181842348919af58242a805336b
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spelling	oai:doaj.org-article:a411c181842348919af58242a805336b2021-11-28T20:08:51ZHot dip Zn-5Al coatings with improved corrosion resistance of reinforcement steel0543-58461334-2576https://doaj.org/article/a411c181842348919af58242a805336b2022-01-01T00:00:00Zhttps://hrcak.srce.hr/file/386172https://doaj.org/toc/0543-5846https://doaj.org/toc/1334-2576The article presents the results of tests of Zn-5Al coatings obtained on reinforcement bars made of B500SP steel. The microstructure using Scanning electron microscopy (SEM) and chemical composition in micro-regions using Energy dispersive spectroscopy (EDS) are shown. The electrochemical parameters of the corrosion process of the coatings were determined and the mechanical properties of the reinforcement bars after the coating were tested. It was found that the coating consists of the outer layer consisting of hypoeutectic regions of Al solution in Zn (α) and the ZnAl eutectic (α+β), and a diffusion layer composed of FeAl<sub>3</sub> phase. Potentiodynamic tests have shown that the Zn- Al5 coating provides sacrificial protection for the reinforcement steel and has a much lower corrosion current density compared to the traditional zinc coating.A. MarekCroatian Metallurgical Societyarticlecoatinghot dip galvanizingZn-5Alcorrosion resistanceX-ray researchMining engineering. MetallurgyTN1-997ENMetalurgija, Vol 61, Iss 2, Pp 389-391 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	coating hot dip galvanizing Zn-5Al corrosion resistance X-ray research Mining engineering. Metallurgy TN1-997
spellingShingle	coating hot dip galvanizing Zn-5Al corrosion resistance X-ray research Mining engineering. Metallurgy TN1-997 A. Marek Hot dip Zn-5Al coatings with improved corrosion resistance of reinforcement steel
description	The article presents the results of tests of Zn-5Al coatings obtained on reinforcement bars made of B500SP steel. The microstructure using Scanning electron microscopy (SEM) and chemical composition in micro-regions using Energy dispersive spectroscopy (EDS) are shown. The electrochemical parameters of the corrosion process of the coatings were determined and the mechanical properties of the reinforcement bars after the coating were tested. It was found that the coating consists of the outer layer consisting of hypoeutectic regions of Al solution in Zn (α) and the ZnAl eutectic (α+β), and a diffusion layer composed of FeAl<sub>3</sub> phase. Potentiodynamic tests have shown that the Zn- Al5 coating provides sacrificial protection for the reinforcement steel and has a much lower corrosion current density compared to the traditional zinc coating.
format	article
author	A. Marek
author_facet	A. Marek
author_sort	A. Marek
title	Hot dip Zn-5Al coatings with improved corrosion resistance of reinforcement steel
title_short	Hot dip Zn-5Al coatings with improved corrosion resistance of reinforcement steel
title_full	Hot dip Zn-5Al coatings with improved corrosion resistance of reinforcement steel
title_fullStr	Hot dip Zn-5Al coatings with improved corrosion resistance of reinforcement steel
title_full_unstemmed	Hot dip Zn-5Al coatings with improved corrosion resistance of reinforcement steel
title_sort	hot dip zn-5al coatings with improved corrosion resistance of reinforcement steel
publisher	Croatian Metallurgical Society
publishDate	2022
url	https://doaj.org/article/a411c181842348919af58242a805336b
work_keys_str_mv	AT amarek hotdipzn5alcoatingswithimprovedcorrosionresistanceofreinforcementsteel
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Hot dip Zn-5Al coatings with improved corrosion resistance of reinforcement steel

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