| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7988417 | Intermetallics | 2018 | 11 Pages |
Abstract
The lifetimes of the E/TBC systems exceeded the maximum exposure period of 1000 cycles at 1100 °C. When cyclically tested at 1200 °C, the samples with Ni-modified and boron containing Co-modified M7Si6-based bond coats failed within 700 cycles. Failure was caused by spallation of thick oxides scales thermally grown on the substrate after degradation of the bond coats. The E/TBC systems with boron containing Fe-modified M7Si6-based bond coats exhibited lifetimes approaching 1000 cycles at 1200 °C. For both YSZ and GZO topcoats, chemical reactions with the TGOs were observed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Reinhold Braun, Uwe Schulz, Léo Portebois, Stéphane Mathieu, Michel Vilasi, Stefan Drawin,