Abstract
The superplastic characteristics in 3 mol% yttria doped tetragonal zirconia polycrystals (TZP) were drastically improved by the combined addition of germanium oxide and other dopants (titanium oxide, magnesium oxide, and calcium oxide) giving rise to 1000% elongation under optimum conditions. Extensive work hardening of the co-doped compositions for temperatures above 1400°C was observed. These were unique features which could not be explained from the work hardening due to dynamic grain growth. Rather it is proposed that the metastable nature of these co-doped materials, which changes during deformation is the cause of this exaggerated work hardening.
| Original language | English |
|---|---|
| Pages (from-to) | 129-134 |
| Number of pages | 6 |
| Journal | Materials Science Forum |
| Volume | 357-359 |
| DOIs | |
| Publication status | Published - 2001 |
| Externally published | Yes |
| Event | Superplasticity in Advanced Materials (ICSAM-2000) - Orlando, FL, United States Duration: 2000 Aug 1 → 2000 Aug 4 |
Keywords
- Co-doping
- Dual phase
- Superplasticity
- Zirconia
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering