Properties of negative thermal expansion β-eucryptite ceramics prepared by spark plasma sintering |
(color online) SEM images of cross sections of (a) β-eucryptite ceramics sintered at 800 °C and the etched β-eucryptite ceramics sintered for 5 min at different temperatures: (b) 800 °C, (c) 900 °C, (d) 1000 °C, and (e) 1100 °C. |