Corrosion of ferrous alloys in deep sea environments

Venkatesan, R and Ravindran, M and Venkataswamy, MA and Bhaskaran, TA and Dwarakadasa, ES (2002) Corrosion of ferrous alloys in deep sea environments. British Corrosion Journal, 37 (4). pp. 257-266.

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Abstract

The deep sea corrosion of ferrous alloys that undergo uniform corrosion without forming a passive layer is related to the amount of dissolved oxygen available in the sea water. The performance of some ferrous alloys at depths of 500, 1200, 3500, and 5100 m in the Indian Ocean has been studied. The results of atomic absorption spectroscopy have revealed that the corrosion product present on mild steel coupons is FeOOH. The results of experiments in shallow water have shown that micro- and macrobiological growths play a significant role in the corrosion of ferrous materials. However, in deeper waters, the absence of macrofouling was evident, and corrosion was not related to any biological product but mainly to the electrochemical reaction of these alloys with sea water. The results of morphological studies by SEM on the surfaces of exposed specimens are also presented.

Item Type: Journal Article
Uncontrolled Keywords: Absorption spectroscopy; Carbon steel; Electrochemistry; Fouling; Marine applications; Morphology; Scanning electron microscopy; Seawater corrosion; Atomic absorption spectroscopy; Deep sea environments; Iron alloys;
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Other, Other, Materials Science Division, Materials Science Division, Other
Depositing User: MS Jayashree S
Date Deposited: 07 Jan 2005
Last Modified: 24 May 2010 09:38
URI: http://nal-ir.nal.res.in/id/eprint/60

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