Polymerised forms in the zirconium conversion coatings on cold-rolled steel

proof of concept

Ana Kraš (Author), Ingrid Milošev (Author), Antoine Seyeux (Author), Philippe Marcus (Author)

Abstract

This study validates the proposed polymerised structure, including tetrameric polynuclear species, of solid amorphous oxyhydroxide zirconium conversion coatings on cold-rolled steel using ToF-SIMS. Tetramers are formed at pH near 4 (and possibly higher), with thickness increasing over extended conversion times. EIS in simulated acid rain further demonstrates that optimal coating formation requires a pH of at least 4 and a sufficient conversion time for adequate thickness, confirmed by the high-frequency EIS loop. Tetramer forms were not observed when the coatings were prepared at lower pH or shorter conversion time, proving that the polymerisation step is crucial for obtaining the coatings offering adequate corrosion protection

Keywords

fizikalna kemija;polimeri;jeklo;

Data

Language:	English
Year of publishing:	2024
Typology:	1.01 - Original Scientific Article
Organization:	IJS - Jožef Stefan Institute
Publisher:	Springer Nature
UDC:	54
COBISS:	199397379
ISSN:	2397-2106
Views:	458
Downloads:	138
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	fizikalna kemija;polimeri;jeklo;
Pages:	6 str.
Volume:	ǂVol. ǂ8
Issue:	ǂArt. ǂ65
Chronology:	2024
DOI:	10.1038/s41529-024-00485-3
ID:	26259738