Premium
Microwave Sintering of Zirconia Materials: Mechanical and Microstructural Properties
Author(s) -
Borrell Amparo,
Salvador María D.,
PeñarandaFoix Felipe L.,
CátalaCivera Jose M.
Publication year - 2012
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2011.02741.x
Subject(s) - materials science , sintering , microwave , cubic zirconia , tetragonal crystal system , vickers hardness test , composite material , atmospheric temperature range , microstructure , ceramic , crystal structure , crystallography , thermodynamics , chemistry , physics , quantum mechanics
Commercially, 3 mol% Y 2 O 3 ‐stabilized tetragonal zirconia (70–90 nm) compacts were fabricated using a conventional and a nonconventional sintering technique; microwave heating in a resonant mono‐mode cavity at 2.45 GHz, at temperatures in the 1100–1400°C range. A considerable difference in the densification behavior between conventional ( CS ) and microwave ( MW ) sintered materials was observed. The MW materials attain a full density of 99.9% of the theoretical density (t.d.) at 1400°C/10 min, whereas the CS reach only 98.0% t.d. at the same temperature and 1 h of dwelling time. Therefore, the MW materials exhibit superior Vickers hardness values (16.0 GPa) when compared with CS (13.4 GPa).