Crack Growth Tests in Air Plasma-Sprayed Yttria Coatings for Alumina Ceramic Matrix Composites
Yttria coatings for all-oxide combustor walls were tested for their crack-growth behavior.These environmental and thermal barrier Y2O3-coatings were processed by atmospheric Digestive Supplements plasma spraying (APS).The stiffness and strength were measured for as-received and aged samples that were heat treated at 1000 °C, 1100 °C and 1