Abrasive Wear Behavior of Batch Hot-Dip Galvanized Coatings

  • In recent decades, batch hot-dip galvanized (HDG) steel has proven itself in practical applications due to the good corrosion resistance of its components. Despite the importance of the mechanical-load-bearing capacity of these coatings, the wear behavior has, so far, only been investigated very sporadically and not systematically, so a quantification of the wear behavior and statements on the mechanisms are vague. Therefore, two body wear tests with bonded abrasive grain were carried out. Varying the friction rolls, load, and total number of cycles, the wear behavior was investigated. The mass loss and the layer thickness reduction were measured at different intervals. After the test, the microstructure in the cross- section and the hardness according to Vickers (0.01 HV) were evaluated. The results showed that the wear behavior of HDG coatings against abrasive loads can be characterized with the selected test conditions. Initially, the applied load removed the soft η-phase. As the total number of cycles increases, the η- and ζ-phases deform plastically, resulting in a lower mass reduction compared to that expected from the measured layer thickness. The characteristic structure of a batch HDG coating with hard intermetallic Zn-Fe phases and an outer pure zinc phase has demonstrated effective resistance to abrasion.

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Metadaten
Author:Thomas Pinger, Marco BrandORCiD, Sonja GrotheORCiD, Gabriela MargineanORCiD
URN:urn:nbn:de:hbz:1010-opus4-45841
DOI:https://doi.org/10.3390/ma17071547
ISSN:1996-1944
Parent Title (English):Materials (Special Issue Metal Coatings for Wear and Corrosion Applications (Second Edition))
Publisher:MDPI
Document Type:Article
Language:English
Date of Publication (online):2024/03/28
Date of first Publication:2024/03/28
Publishing Institution:Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen
Release Date:2024/11/26
Tag:abrasion; batch hot-dip galvanizing; coating; wear behavior; zinc
Volume:2024
Issue:17 (7)
Article Number:1547
Page Number:13
Institutes:Fachbereiche / Maschinenbau, Umwelt- und Gebäudetechnik
Licence (German):Creative Commons - Namensnennung
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