Table 7: APS coatings Metallographic examination data.
|
Sample |
|
|||||
|
|
Porosity |
Interface contamination |
Delamination |
Interface Separation |
Cracks |
Rockwell Hardness (HR15 N scale) |
|
Chromium Oxide TopCoat |
4% |
< 35% |
No Delamination |
No separation |
No Cracks |
96 ± 0.63 |
|
CoNiCrAlY Bond Coat |
2% |
< 35% |
No Delamination |
No separation |
No Cracks |
|