Abstract
Ir-Nb alloys were fabricated via a pulse electric current sintering (PECS) process with addition of Ni or Al from powder mixtures. A sintering temperature of 1800 °C and a holding time of 4 h were used. Relative densities of sintered sample exceeded 90% theoretical density. Phases and microstructures were analyzed. The influence of Ni and Al on the microstructure was compared. Metal loss during sintering and the existence of pores were the main problems found in this study.
| Original language | English |
|---|---|
| Pages (from-to) | 213-219 |
| Number of pages | 7 |
| Journal | International Journal of Refractory Metals and Hard Materials |
| Volume | 20 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2002 May |
| Externally published | Yes |
Keywords
- Fcc phase
- Ir-Nb alloys
- Ir-based refractory superalloys
- L1 phase
- Pulse electric current sintering
ASJC Scopus subject areas
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry