Szczegóły publikacji
Opis bibliograficzny
Optimization of Sm-Co alloy electrodeposition: influence of electrolyte pH, L-arginine concentration and samarium precursor content / Hubert KAMIŃSKI, Katarzyna SKIBIŃSKA, Marek WOJNICKI, Piotr ŻABIŃSKI // Coatings [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2079-6412 . — 2026 — vol. 16 iss. 10 art. no. 1211, s. 1–37. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 34–37, Abstr. — Publikacja dostępna online od: 2026-10-13
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 171276 |
|---|---|
| Data dodania do BaDAP | 2026-11-10 |
| Tekst źródłowy | URL |
| DOI | 10.3390/coatings16101211 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Coatings |
Abstract
This study investigates and optimizes the potentiostatic electrodeposition of samarium-cobalt (Sm-Co) alloy coatings on copper substrates from aqueous electrolytes, utilizing L-arginine as an environmentally friendly complexing agent. The interdependent effects of electrolyte pH (1.0-4.0), L-arginine concentration (0.05-0.15 M), and initial samarium oxide () precursor concentration (0.075-0.1 M) were evaluated across cathodic potentials ranging from -1.1 V to -1.8 V vs. Ag/AgCl. Increasing the pH from 1.0 to 4.0 enhanced samarium incorporation, reaching a peak value of 38 at.% Sm at pH 4.0. Although a low L-arginine concentration (0.05 M) yielded maximum local samarium content (58 at.%), incomplete metal complexation resulted in severe microcracking. Higher ligand concentrations (0.1-0.15 M, where L denotes L-arginine) ensured full complexation into [CoL]2+ and [Sm(HL)]3+ species, shifting cobalt reduction potentials negatively and producing compact, crack-free coatings at potentials between -1.6 V and -1.8 V. Strong cathodic polarization triggered intense hydrogen evolution, leading to local alkalization, hydroxide () precipitation, increased oxygen incorporation (up to 86%), and current efficiency loss. Achieving uniform, crack-free Sm-Co coatings with high samarium content requires an electrolyte pH of 3.2-4.0 and an L-arginine concentration of at least 0.1 M.
