Abstract
Ceramic foams have a high resistance to corrosion and wear. They also have a good thermal insulation performance because of their high melting point and low thermal conductivity. The thermal shock resistance of a ceramic foam coating with an edge crack under a sudden temperature variation is investigated. The dynamic thermal stress fields in the ceramic foam coating are obtained. Using the superposition principle, the crack problem of the ceramic foam coating is reduced to the solution of a set of singular integral equations. Propagation of the edge crack is analyzed. Effects of the relative density and thermal properties of the ceramic foam and of crack length on the thermal shock resistance are identified. The results obtained can be useful in designing thermal protective ceramic materials for thermal barrier coatings.
Original language | English |
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Pages (from-to) | 773-780 |
Number of pages | 8 |
Journal | Mechanics of Composite Materials |
Volume | 52 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2017 |
Keywords
- ceramic coating
- coatings
- cracks
- superposition principle (physics)
- thermal properties
- thermal stresses