Abstract
The paper establishes a methodology for the study of thermal shock resistance behavior of ceramic coating/metal substrate systems, based on multiple cracking analysis. The stress criterion and the toughness criterion are used to predict the failure behavior of the system. Multi-scale analysis of the thermal shock resistance of the system is made and variations of the thermal shock resistance of the system with crack density are displayed for different values of coating to substrate thickness ratio. Some critical size parameters, which control the applicability of the stress-based criterion and the fracture mechanics-based criterion for the determination of the thermal shock resistance of the coating/substrate systems, are explored.
| Original language | English |
|---|---|
| Pages (from-to) | 939-950 |
| Number of pages | 12 |
| Journal | Engineering Fracture Mechanics |
| Volume | 77 |
| Issue number | 6 |
| DOIs | |
| State | Published - Apr 2010 |
Keywords
- Coating
- Fracture mechanics
- Substrate
- Thermal shock
- Thermal stresses
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