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), 1694-1705. (doi:10.1016/j.corsci.2004.08.013).
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Description/Abstract
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.
| Item Type: | Article |
|---|---|
| ISSNs: | 0010-938X (print) |
| Related URLs: | |
| Keywords: | a. copper, copper–nickel, nickel aluminium bronze, b. polarisation, rde/rce, c. cathodic protection, bimetallic corrosion, oxygen reduction |
| Subjects: | T Technology > TP Chemical technology T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences |
| Item ID: | 23186 |
| Date Deposited: | 14 Mar 2006 |
| Last Modified: | 01 Jun 2011 11:11 |
| Contributors: | Kear, G. (Author) Barker, B.D. (Author) Stokes, K.R. (Author) Walsh, F.C. (Author) |
| Date: | 2005 |
| Status: | Published |
| Contact Email Address: | garethkear@branz.co.nz |
| URI: | http://eprints.soton.ac.uk/id/eprint/23186 |
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