Picture map of Europe with pins indicating European capital cities

Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

Explore research outputs by the European Policies Research Centre...

Velocity effects of erosion-corrosion of CrN/Nb superlattice PVD coatings

Purandare, Yashodhan and Stack, Margaret and Hovsepian, P. (2006) Velocity effects of erosion-corrosion of CrN/Nb superlattice PVD coatings. Surface and Coatings Technology, 201 (1-2). pp. 361-370. ISSN 0257-8972

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Erosion-corrosion or tribo-corrosion poses a threat to materials which are subjected to conditions involving corrosive slurries. Industries suffering from erosion-corrosion include the automotive, aviation, pump, mining and petroleum industries. The rate of material removal due to erosion-corrosion can be very different to the damage caused by the individual components, i.e. erosion and corrosion. Hard and corrosion resistant coatings have been produced to resist this combined attack. Coatings include thermally sprayed coatings, composite cermets, multilayer and monolithically grown PVD coatings. They have improved wear and corrosion resistance owing to their high hardness and use of noble metals. Previous work on the erosion-corrosion of CrN/NbN superlattice coatings has shown variation in the erosion-corrosion mechanisms and volume loss with change in impact angle and applied potential. Yet the effect of velocity on the transitions between erosion-corrosion mechanisms of superlattice CrN/NbN PVD coatings is unexplored. The present work investigates the velocity effects on erosion-corrosion behaviour of range of multilayer CrN/NbN "superlattice" PVD coatings against that of uncoated M2 tool steel. This work discusses the possible interaction between erosion-corrosion for CrN/NbN PVD coatings. Erosion-corrosion mechanism maps and wastage maps have been generated based on the results to depict the changing mechanisms of material degradation with impact angle and changing velocity.