Ramakrishniah, K. (1986) Role of some biologically important compounds on the corrosion of mild steel and copper in sodium chloride solutions. Bulletin of Electrochemistry , 2 (1). pp. 7-10. ISSN 0256-1654

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Abstract

The performance of amino acids and carboxylic acids of biological importance on the corrosion of mild steel and copper in sodium chloridesolutionswas investigated. Manyofthe amino acidsare inhibitive. Aspartic acid, cysteine, cystine, threonine and histidine enhance the corrosion of mild steel. For copper, however, all the compounds except 4-amino n-butyric acid and hippuric acid, promote corrosion. The specific influence of the benzoyl group in hippuric acid is brought out. Of the carboxylic acids investigated propionate, oxalate, succinate and a-ketoglutarate bring about considerable inhibition for mild steel. For copper all the anions, except formate, acetate and propionate, increase corrosion and thioglycollate ions are highly aggressive. With a view to study the antimicrobial properties, the effects of papaverine, brucine, strychnine, ephedrine and cinchonidine were also examined. Papaverine is inhibitive for mild steel while brucine, strychnine and cinchonidine are inhibitive for copper. The results are presented in the light of their structural relationships.

Item Type:	Article
Uncontrolled Keywords:	Corrosion of Steel & Copper; Role of biological compounds
Subjects:	Biocorrosion Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	21 Mar 2012 05:22
Last Modified:	21 Mar 2012 05:22
URI:	http://cecri.csircentral.net/id/eprint/2179

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