Thermal Cycling Damage and Thermal Barrier Property of TBC
| Autor: | Minoru Ohara, Tatsuya Ishibashi, Masashi Takahashi, Yoshiharu Mutoh, Motofumi Ohki |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Materials science
Mechanical Engineering Metals and Alloys Temperature cycling engineering.material Surfaces Coatings and Films Thermal barrier coating Cracking Coating Mechanics of Materials visual_art visual_art.visual_art_medium engineering Degradation (geology) Ceramic Composite material Porosity Layer (electronics) |
| Zdroj: | QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY. 16:395-404 |
| ISSN: | 0288-4771 |
| Popis: | Two kinds of thermal cycle tests with short (10 min) and long (23h) holding times were carried out to investigate thermal cycling damage characteristics and thermal barrier property of thermal barrier coatings (TBCs). Surface cracks vertical to the coating surface were nucleated due to thermal stress during both the thermal cycle tests. Holding time had no significant influence on the surface cracking behavior. On the other hand, holding time had a significant influence on the thermal barrier property, which was degraded with increasing total holding time. The degradation of thermal barrier property was caused by the decrease in porosity and hence by the increase in density of ceramic layer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|