20.500.12556/DiRROS-22087 Polymerised forms in the zirconium conversion coatings on cold-rolled steel proof of concept 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 fizikalna kemija polimeri jeklo true false true Springer Nature Švica Angleški jezik Slovenski jezik © The Author(s) 2024 Neznano 2025-04-23 10:18:49 2025-04-23 10:18:49 2025-10-24 03:50:30 0000-00-00 00:00:00 2024 0 0 6 str. Art. 65 Vol. 8 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-03-19 2024-05-31 2024-06-18 54 2397-2106 10.1038/s41529-024-00485-3 199397379 RAZ_Kras_Ana_2024.pdf RAZ_Kras_Ana_2024.pdf 1 F558B3B0EF7110914A6B72C3A87B4B6A 613e7b080bd508bae563addadb236a24c54c29e8fcb108e241117b741fe86dd7 a59b3a64-201c-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31926 Institut Jožef Stefan 0 0 0