Abstract
The influence of dysprosia addition on the sintering and resulting microstructure of nano-grained CeO 2 ceramics was investigated as functions of the spark plasma sintering parameters. The addition of Dy 2 O 3 (forming a solid solution) resulted in an increase in relative density and a decrease in grain size in sintered samples. The relative density of samples with Dy 2 O 3 content of 6 and 10 mol% was over 95% when sintered at 1050°C under 500 MPa for holding times as short as 5 min. The application of high pressure facilitated the consolidation to relatively high densities with minimal grain growth. Heating rate and holding time, however, had insignificant effect on density but a measurable effect on grain size.
Original language | American English |
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Journal | Materials Science and Engineering Faculty Publications and Presentations |
State | Published - 1 May 2012 |
EGS Disciplines
- Materials Science and Engineering