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- Title
Reaction-sintering of lead-free piezoceramic compositions: (0.95 − x)Na<sub>0.5</sub>K<sub>0.5</sub>NbO<sub>3</sub>–0.05LiTaO<sub>3</sub>– xLiSbO<sub>3</sub>.
- Authors
Bomlai, Pornsuda; Sukprasert, Sureewan; Muensit, Supasarote; Milne, Steven
- Abstract
Incorporation of LiSbO3 into the lead-free piezoceramic composition 0.95Na0.5K0.5NbO3–0.05LiTaO3 produced a change from an orthorhombic to tetragonal crystal system in samples produced by reaction-sintering. The inferred limit of solid solution along the compositional join, (0.95 − x)Na0.5K0.5NbO3–0.05LiTaO3– xLiSbO3, occurred at x ~ 0.06. Differential scanning calorimetry indicated broad peaks at temperatures associated with ferroelectric–paraelectric transitions. The transition temperatures decreased with increasing values of x, up to x = 0.06. Microstructures showed secondary grain growth; a slight decrease in grain-size with increasing LiSbO3 modification was identified.
- Subjects
SINTERING; LEAD; CERAMICS; SOLID solutions; TRANSITION temperature; MICROSTRUCTURE; CALORIMETRY; LITHIUM tantalate; OXIDES
- Publication
Journal of Materials Science, 2008, Vol 43, Issue 18, p6116
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-008-2940-3