Abstract No.:	5503
Title:	The influence of post treatment presence on high temperature corrosion resistance of YSZ thermal barrier coatings
Authors:	Alsu Akhmetgareeva* / Technological Systems for Protective Coatings, Ltd., Russian Federation Sergey Baldaev / TSPC Ltd, Russia Ivan Mazilin/ TSPC Ltd, Russia Lev Baldaev/ TSPC Ltd, Russia Tatyana Ilinkova/ Kazan National Research Technical University named after A.N.Tupolev - KAI (KNRTU-KAI), Russia
Abstract:	Well known that high temperature corrosion resistance of thermal barrier coatings (TBC) may depend not only on chemical composition, thickness, the rate of formation of TGO layer, but also on the presence of post treatment. In this work we studied the influence of presence of post treatment on properties of TBC particularly on high temperature corrosion. TBC system were sprayed on Ni-based substrate and consists of HVOF NiCo-based bond coat (BC) and APS yttria-stabilized zirconia (YSZ) top coat. Thermal cycling test in the presence of corrosive environment was used to determine effect of post treatment presence. Before and after Thermal cycling test cross-section of specimens were studied by SEM and EDX analyzes. Preliminary results demonstrated that high temperature corrosion resistance of TBC with APS-top layer and HVOF-bond layer can be improved by applying post treatment.

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