Steenbakker, R J LWellman, R. G.Nicholls, John R.2011-02-072011-02-072006-12-01R.J.L. Steenbakker, R.G. Wellman, J.R. Nicholls, Erosion of gadolinia doped EB-PVD TBCs, Surface and Coatings Technology, Volume 201, Issue 6, 4 December 2006, Pages 2140-21460257-8972http://dx.doi.org/10.1016/j.surfcoat.2006.03.022http://dspace.lib.cranfield.ac.uk/handle/1826/4266Gadolinia additions have been shown to significantly reduce the thermal conductivity of EB-PVD TBCs. The aim of this paper is to further the understanding on the effects of dopants on the erosion resistance of EB-PVD TBCs by studying the effects of 2 mol% Gd2O3 additions on the room and high temperature erosion resistance of as received and aged EB-PVD TBCs. Previously it has been reported that gadolinia additions increased the erosion rate of EB- PVD TBCs, this is indeed the case for room temperature erosion, however under high temperature (825 à °C) erosion conditions this is not the case and the doped TBCs have a slightly lower erosion rate than the standard YSZ EB-PVD TBCs. This has been attributed to a change in the erosion mechanisms that operate at the different temperatures. This change in mechanism was not expected under the impact conditions used and has been attributed to a change in the column diameter, and how this influences the dynamics of particle impactionen-UKErosionEB-PVD TBCDopant effectsArticle