Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1465415 | Ceramics International | 2009 | 8 Pages |
Abstract
Two-step sintering was employed to consolidate nanocrystalline 8 mol% yittria stabilized zirconia processed by glycine-nitrate method. Results verified the applicability of this method to suppress the final stage of grain growth in the system. The grain size of the high density compacts (>97%) produced by two-step sintering method was seven times less than the pieces made by the conventional sintering technique. Up to ∼96% increase in the fracture toughness was observed (i.e. from 1.61 to 3.16 MPa m1/2) with decreasing of the grain size from ∼2.15 to ∼295 nm. A better densification behavior was also observed at higher compacting pressures.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mehdi Mazaheri, M. Valefi, Z. Razavi Hesabi, S.K. Sadrnezhaad,