The corrosion of nickel–aluminium bronze in seawater [in A Century of Tafel’s Equation: A Commemorative Issue of Corrosion Science]
Wharton, J.A., Barik, R.C., Kear, G., Wood, R.J.K., Stokes, K.R. and Walsh, F.C. (2005) The corrosion of nickel–aluminium bronze in seawater [in A Century of Tafel’s Equation: A Commemorative Issue of Corrosion Science]. Corrosion Science, 47, (12), 3336-3367. (doi:10.1016/j.corsci.2005.05.053).
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Description/Abstract
Nickel–aluminium bronze (NAB) alloys show good corrosion resistance under marine conditions. The corrosion behaviour of cast and wrought NAB alloys is illustrated in this work through a range of electrochemical techniques including open-circuit potentiometry with time, oxygen reduction voltammetry, NAB dissolution voltammetry, potential step (or flow step) current transients and linear polarisation resistance. The galvanic coupling of NAB to stainless steel or copper is examined by zero resistance ammetery. The importance of using controlled flow working electrodes is illustrated by the use of a rotating disc electrode, a rotating cylinder electrode and a bimetallic (NAB/copper–nickel) rotating cylinder electrode. In addition to controlling the hydrodynamics, such electrodes allow charge transfer data to separate from those of mass transport control under mixed kinetic control. Longer term seawater immersion trials on planar coupons coupled to titanium or cupronickel are also reported. The relative contributions of erosion and corrosion attack are considered using a wall-jet electrode and the corrosion characteristics of NAB are compared to those of copper and copper–nickel in chloride media.
| Item Type: | Article |
|---|---|
| Additional Information: | A Century of Tafel’s Equation: A Commemorative Issue of Corrosion Science |
| ISSNs: | 0010-938X (print) |
| Related URLs: | |
| Keywords: | nab, rde, rce, erosion, wall-jet electrode, galvanic coupling, zra, lpr, charge transfer kinetics, mass transport |
| Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering |
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences |
| Item ID: | 23739 |
| Date Deposited: | 21 Mar 2006 |
| Last Modified: | 02 Mar 2012 12:46 |
| Contributors: | Wharton, J.A. (Author) Barik, R.C. (Author) Kear, G. (Author) Wood, R.J.K. (Author) Stokes, K.R. (Author) Walsh, F.C. (Author) |
| Date: | 2005 |
| Additional Information: | A Century of Tafel’s Equation: A Commemorative Issue of Corrosion Science |
| Status: | Published |
| Contact Email Address: | jaw6@soton.ac.uk |
| URI: | http://eprints.soton.ac.uk/id/eprint/23739 |
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