Crack-Resistance Behavior of an Encapsulated, Healing Agent Embedded Buffer Layer on Self-Healing Thermal Barrier Coatings

• Published in: Coatings (Basel) Vol. 9; no. 6; p. 358
• Main Authors: Song, Dowon, Song, Taeseup, Paik, Ungyu, Lyu, Guanlin, Jung, Yeon-Gil, Choi, Baig-Gyu, Kim, In-Soo, Zhang, Jing
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.06.2019
• Subjects: Buffer layers; Cracks; Design; Embedding; Encapsulation; Fatigue cracks; Fatigue strength; Fatigue tests; Heat treatment; Indentation; Jet engines; Microhardness; Oxidation; Particle size; Plasma; Protective coatings; Raw materials; Scanning electron microscopy; Self healing materials; Shock tests; Thermal barrier coatings; Thermal cycling; Thermal fatigue; Thermal resistance; Thermal shock; United Kingdom > UK; United States > US; Switzerland; Japan; Germany

In this work, a novel thermal barrier coating (TBC) system is proposed that embeds silicon particles in coating as a crack-healing agent. The healing agent is encapsulated to avoid unintended reactions and premature oxidation. Thermal durability of the developed TBCs is evaluated through cyclic ther...