Role of the Anion in relation to Metallic Corrosion and Inhibition

Autor:	Dora M. Brasher
Rok vydání:	1962
Předmět:	Metal Multidisciplinary Aqueous solution Chemistry visual_art Inorganic chemistry visual_art.visual_art_medium Electrolyte Corrosion Dilution Anaerobic corrosion Ion
Zdroj:	Nature. 193:868-869
ISSN:	1476-4687 0028-0836
DOI:	10.1038/193868a0
Popis:	WHEN metals, for example, mild steel, corrode in aqueous solution it is commonly accepted that certain electrolytes, notably chlorides, sulphates, etc., are corrosive, whereas other electrolytes, such as chromates, silicates, benzoates, are inhibitive. In this communication the claim is made that electrolytes cannot thus be rigidly classified, and that (with the exception of certain reducing salts such as formates) ‘corrosive’ or ‘inhibitive’ properties are a function of the concentration of the solution. All electrolytes are corrosive in solutions of sufficiently great dilution, and in conditions of high aeration corrosion-rates and corroding potentials obey a common relationship, as will be described here. On the other hand, at high concentrations the normally aggressive nitrates become inhibitive, while chlorides and possibly even sulphates show a tendency towards inhibition.
Databáze:	OpenAIRE
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