Abstract
Multilayered Pt/Ru modified aluminide coating for thermal barrier coating (TBC) systems has been investigated. 2 μm Pt+2 μm Ru+2 μm Pt was first deposited on nickel-base superalloy DZ125 by electrodeposition, and then the coating was treated by annealing and a conventional pack-cementation aluminizing process. The cyclic oxidation tests were carried out at 1423 K in air. It was found that the thermal cyclic oxidation resistance of Pt/Ru-modified aluminide coating was comparable to that of Pt-modified aluminide coating, which was much better than simply aluminized DZ125. The addition of Ru to Pt-modified aluminide coating increased the resistance to rumpling. The microstructures and phase constitutions of the coating before and after oxidation were investigated.
| Original language | English |
|---|---|
| Pages (from-to) | 280-288 |
| Number of pages | 9 |
| Journal | Journal of Materials Science and Technology |
| Volume | 27 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2011 |
Keywords
- Aluminide coating
- Cyclic oxidation
- Pt/Ru-modified
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