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Influence of flow conditions on the corrosion of AISI 304L stainless steel

Wharton, J.A. and Wood, R.J.K. (2004) Influence of flow conditions on the corrosion of AISI 304L stainless steel Wear, 256, (5), pp. 525-536. (doi:10.1016/S0043-1648(03)00562-3).

Record type: Article


Hydrodynamic and electrochemical noise measurements (ENMs), of AISI 304L stainless steel, were made in a pipe test section of 28 mm inside diameter for a range of flow regimes from laminar to turbulent. Mean flow velocities through the test section were controlled at 0.04, 0.07, 0.11, 0.36, 1.8 and 2.7 m s?1, equivalent to Reynolds numbers of 1000, 2000, 3000, 10 000, 50 000 and 75 000, respectively. Standard hydrodynamic parameters were employed to characterise and evaluate the complex interrelationship between the mass transfer rate of oxygen and momentum transfer through turbulence to the metal/solution interface. For AISI 304L stainless steel, pitting typically occurs in the form of metastable pits which either repassivated before achieving stability or grow to become stable pits. Metastable pitting was evident under all flow regimes. The fluid flow, whether laminar or turbulent, had little overall effect on the nucleation rates of metastable pitting events. Conversely, stable pit growth was most evident during laminar flow immediately before the transition to turbulent flow and close to the critical velocity (1.5 m s?1).

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Published date: 2004
Keywords: Stainless steel, Flow-induced corrosion, Reynolds number, Metastable pitting, Electrochemical measurements, Pipe flow, Hydrodynamic regimes


Local EPrints ID: 22724
ISSN: 0043-1648
PURE UUID: bb19a1c8-e739-4404-8c52-a6870a87b08c
ORCID for J.A. Wharton: ORCID iD
ORCID for R.J.K. Wood: ORCID iD

Catalogue record

Date deposited: 21 Mar 2006
Last modified: 17 Jul 2017 16:21

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