Mohanan, S. and Maruthamuthu, S. and Kalaiselvi, N. and Palaniappan, R. and Venkatachari, G. and Palaniswamy, N. and Raghavan, M. (2005) Role of quaternary ammonium compounds and atmp on biocidal effect and corrosion of mild steel and copper. Corrosion Reviews. pp. 425-443.

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Abstract

Polyphosphates and organophosphonates are used as corrosion inhibitors in cooling waters. Biocides are also added to avoid microfouling by cooling water in industries. This work has been undertaken to find the influence of biocides such as quaternary ammonium compounds like cetyltrimethyl ammonium bromide (CTAB) and cetyl pyridinium bromide (CPB) on the corrosion of mild steel and copper in the presence of phosphonates. Cationic biocides are found to be highly efficient and the killing efficiency is found to be more for CTAB than CPB. On the other hand, CPB is found to be better than CTAB when biocides are used with inhibitor. Between the two metals chosen, the inhibition efficiency towards copper was observed to be more than mild steel due to the addition of CTAB and CPB with inhibitor. Polarization studies revealed that the presence of biocide CTAB with inhibitor gives the inhibition efficiency of about 80% for mild steel. CPB with inhibitor shows higher interference between biocide and inhibitor, whereas CPB alone is found to act as an inhibitor for copper (73%), which shows that the inhibitor might interfere in the biocidal action on copper.

Item Type:	Article
Uncontrolled Keywords:	Biocides; inhibitor; mixed inhibitor; corrosion; interference
Subjects:	Biocorrosion Corrosion Protection Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	TTBD CECRI
Date Deposited:	14 Jan 2012 02:55
Last Modified:	14 Jan 2012 02:55
URI:	http://cecri.csircentral.net/id/eprint/26

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