4.7 Article

The influence of sulphide transport on the growth and properties of copper sulphide films on copper

Journal

CORROSION SCIENCE
Volume 87, Issue -, Pages 233-238

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.06.027

Keywords

Copper; EIS; Interfaces

Funding

  1. SKB Swedish Nuclear Fuel and Waste Management Co. (Stockholm, Sweden)

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The kinetics of Cu2S (chalcocite) film growth on corroding copper surfaces were monitored by following the change in pH in anaerobic aqueous sulphide solutions. Under stagnant conditions film growth was controlled by SH- diffusion in solution, and the formation of a non-protective film allowed complete consumption of available SH-. When accelerated by convection, film growth rapidly became controlled by Cu+ transport through a coherent protective film and proceeded at a considerably slower rate. (C) 2014 Elsevier Ltd. All rights reserved.

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