Fine‐grained materials containing both α′‐Ca2SiO4 and β‐Ca2SiO4 were fabricated as an analogue to tetragonal zir‐conia polycrystals (TZP) with the use of barium to stabilize the high‐temperature polymorphs of Ca2SiO4. The micro‐structure of dense α′L‐Ca2SiO4 exhibited none of the twinning or residual strain previously observed in fine‐grained β‐Ca2SiO4 and there was no evidence of barium‐rich grain boundary phases. Materials fired in the α region exhibited large grain sizes. Stress‐induced α′L→β transformation was observed on ground surfaces but not on fracture surfaces.
|Original language||English (US)|
|Number of pages||7|
|Journal||Journal of the American Ceramic Society|
|State||Published - Oct 1993|
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry