Inhibiting and accelerating effects of some quinolines on the corrosion of zinc and some binary zinc alloys in HCl solution

Autor:	M. S. Abdelaal, M. S. Hassan, Z. A. Ahmed
Rok vydání:	1992
Předmět:	General Chemical Engineering Quinoline Inorganic chemistry chemistry.chemical_element Zinc Electrochemistry Corrosion chemistry.chemical_compound Corrosion inhibitor Adsorption chemistry Materials Chemistry Chelation Dissolution
Zdroj:	Journal of Applied Electrochemistry. 22:1104-1109
ISSN:	1572-8838 0021-891X
DOI:	10.1007/bf01029593
Popis:	The effect of quinoline, benzo(f)quinoline and 8-hydroxyquinoline on the electrochemical and corrosion behaviour of zinc, Zn-2% Cd and Zn-2% Pb alloys in deaerated 0.1m HCl solution was studied using the potentiostatic technique. Although quinoline inhibited the corrosion of zinc at all examined concentrations, it accelerated the corrosion of the alloys. As an inhibitor, quinoline was found to have a predominant anodic effect and its adsorption conformed with the Temkin isotherm. At concentrations >10−4 m, benzo(f)quinoline inhibited the corrosion of both zinc and the alloys. Inhibition was found to be predominantly anodic without changing the mechanism of zinc dissolution. Inhibition by 8-hydroxy quinoline was found to be purely anodic occurring by surface chelation, resulting in a change of the mechanism of zinc dissolution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6a775201d6400d15d3771af7fb1acb2b https://doi.org/10.1007/bf01029593 Zobrazit plný text záznamu Full text from SpringerLink