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Corrosion and impressed current cathodic protection of copper-based materials using a bimetallic rotating cylinder electrode (BRCE)

Kear, G., Barker, B.D., Stokes, K.R. and Walsh, F.C. (2005) Corrosion and impressed current cathodic protection of copper-based materials using a bimetallic rotating cylinder electrode (BRCE) Corrosion Science, 47, (7), pp. 1694-1705. (doi:10.1016/j.corsci.2004.08.013).

Record type: Article


A bimetallic rotating cylinder electrode (having individual electrode areas of 10 cm2 and rotating at 200–1400 rpm) has been used to examine the corrosion and protection characteristics of copper/nickel aluminium bronze and 90–10 copper–nickel/nickel aluminium bronze galvanic couples in filtered seawater at 25 °C. The flow-influenced electrochemistry of the systems was determined using zero resistance ammetry, corrosion potential measurements and a potential step current transient technique. In each case, the galvanic corrosion potential and corrosion rate displayed a Reynolds number dependency where mass transport control of the anodic dissolution reaction partially controlled the reaction rate. Bimetallic impressed current cathodic protection (ICCP) has also been demonstrated for a range of applied protection potentials and Reynolds numbers. A comparison has been made between the directly measured bimetallic ICCP current demand and that determined from independent, single-metal rotating cylinder electrode measurements. In this case, the mixed charge and mass transport controlled rate of oxygen reduction was examined.

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Published date: 2005
Keywords: a. copper, copper–nickel, nickel aluminium bronze, b. polarisation, rde/rce, c. cathodic protection, bimetallic corrosion, oxygen reduction


Local EPrints ID: 23186
ISSN: 0010-938X
PURE UUID: 96b208b4-cdeb-405b-b849-cbd3500fbce6

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Date deposited: 14 Mar 2006
Last modified: 17 Jul 2017 16:18

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Author: G. Kear
Author: B.D. Barker
Author: K.R. Stokes
Author: F.C. Walsh

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