Affordable CMAS -Resistant Thermal Barrier Coatings

Thermal barrier coating systems that incorporate enhanced protection to CMAS induced delaminations while still retaining excellent thermal protection properties and high thermal cycle lifetimes are desired for next generation gas turbine engines. In this work, DVTI will develop advanced CMAS protection methodologies having novel compositions and architectures and as well as processing approaches for applying multi-layered protection concepts onto components for use in turbine engines. The latter will be enabled through the use of a novel deposition approach that has the ability to economically deposit multi-layered structures at high rate with unique control over the composition and microstructure and the use of integrated computational materials engineering techniques (ICME). Specifically, work during phase I will entail: i) the identification of advanced CMAS protective concepts, ii) the assembly of an experimental configuration and ICME techniques that could be used to determine the processing approaches required to deposit CMAS resistant TBC structures and iii) a testing methodology that determined the effectiveness of the resulting structures. Effective coatings from Phase I testing will be subjected to thermal cycling and erosion testing during the Phase I option to quantify performance advantages.