Measurements of stress distributions in top coat and TGO layers of EB-PVD TBC have been carried out. It is found that the stress in the top coat layer in as deposited state is ∼3.5 GPa and it reduces to ∼1 GPa after isothermal heat exposure in air. The stress in the TGO layer is an order of ∼1 GPa. The stress in the top coat layer decreases with the increase of heat exposure time and that in the TGO layer vice versa. This change originates from the release of residual stress during deposition process and change in force-balance, which originates from the growth of TGO layer.
|ジャーナル||Ceramic Engineering and Science Proceedings|
|出版物ステータス||Published - 2002 1 1|
|イベント||26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B - Cocoa Beach, FL, United States|
継続期間: 2002 1 13 → 2002 1 18
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry