| DOI | Resolve DOI: https://doi.org/10.1016/j.ceramint.2019.09.258 |
|---|
| Author | Search for: Xiao, Bingjie; Search for: Robertson, Taylor1; Search for: Huang, Xiao; Search for: Kearsey, Rick1 |
|---|
| Affiliation | - National Research Council Canada. Aerospace
|
|---|
| Format | Text, Article |
|---|
| Subject | thermal barrier coating; crack numerical density; fracture; gamma statistics |
|---|
| Abstract | This study examined the application of crack numerical density theory (CND) to determine the damage state of a thermal barrier coating (TBC) produced using the suspension plasma spray (SPS) technique. A TBC consisting of a partially stabilized zirconia topcoat was deposited upon an APS NiCoCrAl bondcoat and INCONEL 625 substrate. The TBC was exposed to an isothermal temperature of 1080 °C for a duration of up to 1300 h with specimens removed for examination at, 400 h, 800 h and 1300 h. Material properties after each exposure were determined and utilized to fit a CND model to predict the crack distribution within the topcoat following isothermal exposure. Probabilities of cracks developing within the topcoat that can bridge asperities (0.01% at 400 h, 2% at 800 h, and 11% at 1300 h) were determined indicating that CND may be a useful tool for predicting lifetimes of SPS-TBCs. |
|---|
| Publication date | 2019-09-27 |
|---|
| Publisher | Elsevier |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 28df6ba1-fb3c-4b85-84df-71207c229158 |
|---|
| Record created | 2020-07-08 |
|---|
| Record modified | 2021-09-17 |
|---|
