Advanced thermal barrier coatings in aviation gas turbine engines: Current trends and future prospects

In this paper, we offer an up-to-date exhaustive review of thermal barrier coatings (TBCs). The review is concerned with the use of this coating in aviation gas turbine engines (GTEs). It is divided into five main sections covering: (i) importance of TBCs to aviation GTEs, (ii) the processing techniques adopted and the quality of the resulting TBCs, (iii) the coupled modeling of thermal residual stresses resulting from inhomogeneous plastic deformation in the different phases of the coating due to high temperature, (iv) the build-up of spallation failure that typically exists in TBCs, and finally (v) an overview of future top coat ceramics.