A rotating parallel disc device for flow-accelerated corrosion research

This presentation introduces a novel Parallel Disc Device (PDD) that is capable of generating very high wall shear rates at the surface of a metal electrode under flow conditions that are presumed laminar. The device has been electrochemically characterised by studying, as a function of both gap distance and top disc rotation, the diffusion limited reduction of hexacyanoferrate (III) at a nickel working electrode and the diffusion limited reduction of dissolved oxygen at a copper electrode.