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

proof of concept

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

Povzetek

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

Ključne besede

fizikalna kemija;polimeri;jeklo;

Podatki

Jezik:	Angleški jezik
Leto izida:	2024
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	IJS - Institut Jožef Stefan
Založnik:	Springer Nature
UDK:	54
COBISS:	199397379
ISSN:	2397-2106
Št. ogledov:	458
Št. prenosov:	138
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	fizikalna kemija;polimeri;jeklo;
Strani:	6 str.
Letnik:	ǂVol. ǂ8
Zvezek:	ǂArt. ǂ65
Čas izdaje:	2024
DOI:	10.1038/s41529-024-00485-3
ID:	26259738