| || Corrosion Control of Kunifer-5 Seawater Piping Systems of Naval Ships by Cathodic Protection Technique
Author : Akhtar, Iqbal ;Rodrigues, P.V.;Deshmukh, M.B.
Source : Defence Science Journal ; Vol:32(1) ; 1982 ; pp 17-26
Subject : 621.78.019.84 Corrosion
Keywords : Corrosion erosion ;Kunifer 5;Corrosion
Abstract : The cause of premature corrosion of Kunifer-5(copper alloy containing Ni 5 per cent and Fe 1.35 per cent) pipes used in seawater piping systems on board ships for feeding seawater to various units has been discussed. It has been shown that the Kunifer-5 alloys suffer from heavy corrosion-erosion attack at unavoidable bends and places where local seawater velocity exceeds the specified limit. The field observations as well as laboratory study have indicated that satisfactory protection of the pipes could be achieved by galvanic cathodic protection using aluminium alloy anodes.