Abstract
Characterization of Pt-Ir alloy coatings on a Ni-base single crystal superalloy was carried out. Pt-Ir alloys with varied composition were sputter-deposited on TMS-82+, which were then subjected to annealing and Al-pack cementation treatments. It was found that all the as-deposited films consisted of Pt-Ir solid solutioned fee single phase, while the annealing treatment at 1423 K for 1 h drastically changed the microstructure, depending on the composition of coated layers. On the other hand, concentration profiles of alloying elements were not drastically changed by the Al-pack cementation process. It was also revealed that Ir addition increases the surface hardness of all the as-deposited, annealed, and aluminized specimens.
| Original language | English |
|---|---|
| Pages (from-to) | 1760-1763 |
| Number of pages | 4 |
| Journal | Materials Transactions |
| Volume | 46 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2005 Aug |
| Externally published | Yes |
Keywords
- Aluminizing
- Bond coat
- Ni-base superalloy
- Platinum-iridium
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering