Enhanced Properties of Co-Sn Coatings Electrodeposited from Choline Chloride-Based Deep Eutectic Solvents

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Nuno Pereira (Author) FCUP; Sousa, CT (Author) FCUP; Carlos M Pereira (Author) FCUP; araujo, j. p. (Author) FCUP; Silva, F (Author) FCUP

Journal

Title: Crystal Growth & Design

Vol. 17

Pages: 5208-5215

ISSN: 1528-7483

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 7 Citations

Other information

Authenticus ID: P-00N-3YF

DOI: 10.1021/acs.cgd.7b00703

Abstract (EN): Co-Sn alloy films were electrodeposited from choline chloride (ChC1)-ethylene glycol (EG) and choline chloride (ChCl1)-urea (U) eutectic mixtures. The deposition of Co-Sn alloy on a copper electrode was studied by cyclic voltammetry, which demonstrates that the coelectrodeposition was achieved. For comparison of properties, Co-Sn alloys were deposited from electrolytes with different Co/Sn ratios. The X-ray diffraction patterns (XRD) showed that the phase structure was affected by the Co/Sn ratio; nevertheless, Co3Sn2 was always the predominant phase. Traces of metallic cobalt were also detected. The nature of the electrolyte used and the metallic composition affected the morphologies of the deposits and their corrosion resistance. The best corrosion resistant coating, with a corrosion potential of -617 mV, was composed by 44.4 wt % of Co and 55.6% of Sn, and it was obtained from the ChCl-EG electrolyte. The magnetic properties of the analyzed samples did not present an evident relationship with the metallic ions ratio in solution.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8