Effect of TiC self-healing coatings on the cyclic oxidation resistance and lifetime of thermal barrier coatings

A comparative study of calcium–magnesium–aluminum–silicon oxide mitigation in selected self-healing thermal barrier coating ceramics

“…In addition, we selected a second composition that had a higher content of the self-healing agent (SiC) that will be able to produce a more significant overall volume expansion. The composition was similar to the one composite structure investigated by Ouyang et al [20] with TiC as the self-healing agent (TiC-YSZ-Al 2 O 3 ). In this class of materials, self-healing of the selected repair agent (SiC) is activated by heating the composite.…”

“…Lastly, two alternative transition metal oxide-based composites, namely YSZ-Al 2 O 3 -Ta 2 O 5 and YSZ-Al 2 O 3 -Nb 2 O 5 , were selected. The self-healing process proceeds via a chemical reaction between the transition metal oxide and alumina forming a ternary oxide phase [19,20]. The formed ternary oxide is expected to flow to the porous regions and block diffusion of the molten CMAS [10].…”

Modelling the fracture behaviour of thermal barrier coatings containing healing particles

“…Several efforts have been made to increase the lifetime of the TBC system, mainly in the directions of varying the deposition process and coating compositions in order to delay the initiation of micro-cracks [3][4][5]. Incorporating self-healing mechanisms in TBC systems is a novel approach to improve the lifetime of these coatings [6][7][8][9][10]. The principle of the self-healing mechanism in a TBC system is demonstrated in Fig.…”

A review on development and application of self-healing thermal barrier composite coatings

“…Self-healing materials are able to repair cracks in ceramics upon heat treatment. Many polymeric, metallic, and concrete-based materials have been reported as self-healing materials over the past few years [75]. Majority of studies in the field of self-healing ceramics are allocated to the use of SiC for healing, which occurs through the oxidation of SiC particles and the resulting volume expansion into the cracks [75].…”