Effect of Low-CTE Oxide-Dispersion-Strengthened Bond Coats on Columnar-Structured YSZ Coatings

Thermal barrier coatings (TBCs) are commonly used to protect gas turbine components from high temperatures and oxidation. Such consist of ceramic top coats metallic bond coats. The mismatch in thermal expansion the coat, coat component material is one main factor leading failure coating system. Columnar-structured offer an enhanced tolerance strain during cycling. On a flat coated surface, these TBCs reach higher cycling performance. However, on rough surfaces, as for spray coatings, performance seems be restricted or even stays below atmospheric-plasma-sprayed (APS) coatings. This low linked out-of-plane stresses at interface between coat. In this study, thin additional oxide-dispersion-strengthened (ODS) with alumina content provides reduced coefficient (CTE) Columnar suspension plasma sprayed (SPS), yttria-stabilized zirconia (YSZ) were combined low-CTE ODS behavior was characterized respect degradation burner-rig facility. comparison showed up-to-four-fold increase new