One possible solution is the application of a thermally-sprayed aluminium (TSA) coating. To date the suitability of such a coating has not been evaluated systematically for use with duplex stainless steels, and a joint-industry project being has now been set up by The Welding Institute to undertake such an evaluation.<.P The main objectives of the project are: to evaluate the application of TSA coatings for prevention of external chloride corrosion cracking and pitting/crevice corrosion of welded and plain duplex stainless steels; to develop relevant corrosion test procedures and test coupon design; to demonstrate the application of TSA to occluded geometries; to produce key recommendations for the specification of TSA to duplex stainless steel.