MICROSTRUCTURE AND GROWTH KINETICS OF ALLOY LAYER IN THE FE- ZN SYSTEM

1 ŠUMEC Martin
Co-authors:
1 BABINEC Martin 1 GOGOLA Peter 1 GONDEK Ján 1 KUSÝ Martin 2 SUAREZ Lucia 1 ČIČKA Roman
Institutions:
1 Institute of Materials Science, Faculty of Material Science and Technology, Slovak University of Technology, Jána Bottu č. 2781/25, 917 24 Trnava, Slovakia, EU, martin.sumec@stuba.sk, martin.babinec@stuba.sk, peter.gogola@stuba.sk, jan.gondek@stuba.sk, martin.kusy@stuba.sk, roman.cicka@stuba.sk
2 Bekaert Technology Center-BTC, NV Bekaert SA, Oude Heerweg 5, 8540, Deerlijk, Belgium, EU, Lucia.Suarez@bekaert.com
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1270-1274
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
22 views / 8 downloads
Abstract

From the moment of immersion, the reaction between molten zinc and solid iron starts forming intermetallic phases. This diffusion controlled process is responsible for the final phase composition of zinc coating. Several samples were created by hot-dipping at various immersion times at T = 723 K (450 °C). Dipping times were divided into two groups. Short term immersion for studying early stages of phase nucleation and growth and long term immersion for observing later phase change and quasi-equilibrium states. For characterization of phases present an EDX was used to determine iron concentration across the alloy layer. After metallographic preparation each phase layer thickness was carefully measured all along with the total thickness of the alloy layer. Results of these measurements were compared with the latest findings. Keeping the same conditions of immersion and only changing the duration allowed us to estimate nucleation and growth kinetics of the layer forming process.

Keywords: Zinc, iron, growth kinetics, intermetallic phases
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