Abstract
Conventional superplastic ceramics have been established at temperatures over 1400 °C with a slower deformation velocity of about 10-4 (s-1). For the application of superplasticity to the manufacturing process, however, high-strain rate deformation velocity of around 10-2/s-1 is necessary. We have reported that alumina addition to 3YTZ (3 mol.%Y2O3 doped ZrO2) is effective in the enhanced ductility. The purpose of this study is to fabricate high-strain rate superplastic 3YTZ by adding manganese and aluminium oxides. Dense and fine-grained 3YTZ systems were obtained by slip casting and low temperature sintering. Manganese and alminium oxides added 3YTZ showed a maximum tensile ductility of about 600% at 1450 °C at a strain rate of 1.2×10-2 s-1.
Original language | English |
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Pages (from-to) | 449-453 |
Number of pages | 5 |
Journal | Journal of the European Ceramic Society |
Volume | 24 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2004 Feb |
Externally published | Yes |
Keywords
- AlO
- Colloidal processing
- Grain growth
- MnO
- Superplasticity
- ZrO
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry