Szczegóły publikacji
Opis bibliograficzny
The influence of sodium gluconate on nickel and manganese codeposition from acidic chloride-sulfate baths / Ewa RUDNIK, Grzegorz WŁOCH // Ionics ; ISSN 0947-7047. — 2014 — vol. 20 iss. 12, s. 1747–1755. — Bibliogr. s. 1755, Abstr.
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 86110 |
|---|---|
| Data dodania do BaDAP | 2014-12-02 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s11581-014-1137-9 |
| Rok publikacji | 2014 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Ionics |
Abstract
Nickel and manganese were codeposited from acidic chloride-sulfate solution in the presence and without sodium gluconate as complexing and buffering agent. Equilibrium pH-dependent distribution of soluble species in the baths was calculated. Deposition of metals was studied by cyclic voltammetry and Hull cell tests. Deposits were obtained in potentiostatic (-1.6 to -1.7 V vs. Ag/AgCl) and galvanostatic (4-8 A/dm(2)) conditions. It was found that the buffering action of gluconate ions improved the quality of the deposits, and compact Ni-Mn with a grid of fine crack layers was produced. The additive inhibited the formation of nonmetallic inclusions represented by decreased oxygen content in the deposits. Layers produced at constant potentials contained 67-79 % Ni, 1-8 % Mn, and 15-30 % O. Under galvanostatic conditions, the average compositions were in the range of 18-80 % Ni, 2-48 % Mn, and 17-42 % O. Despite of the bath composition, the main cathodic reaction was hydrogen evolution resulting in very low amounts of the cathodic deposits.
