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Piezoelectric and Dielectric Properties of (Bi0.5Na0.5)TiO3- (Bi0.5K0.5)TiO3-BaTiO3 Lead-Free Piezoelectric Ceramics
A lead-free piezoelectric ceramic ternary system based on (Bi0.5Na0.5)TiO3 (BNT)-(Bi0.5 K0.5)TiO3(BKT)-BaTiO3(BT) near the morphotropic phase boundary (MPB) between the tetragonal and rhombohedral phases has been investigated. The samples were prepared by a conventional sintering technique. Piezoele...
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| Published in: | Key engineering materials 2007-01, Vol.336-338, p.54-57 |
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| Main Authors: | , |
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| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c298t-ae3eba44cf2f62cab6fcb9879a7ae6cced1a3a127db0cbc77e1c7b8c6725270b3 |
| container_end_page | 57 |
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| container_start_page | 54 |
| container_title | Key engineering materials |
| container_volume | 336-338 |
| creator | Lu, Zhen Ya Chen, Zhi Wu |
| description | A lead-free piezoelectric ceramic ternary system based on (Bi0.5Na0.5)TiO3 (BNT)-(Bi0.5
K0.5)TiO3(BKT)-BaTiO3(BT) near the morphotropic phase boundary (MPB) between the tetragonal
and rhombohedral phases has been investigated. The samples were prepared by a conventional
sintering technique. Piezoelectric properties, dielectric properties and microstructures of
BNT-BKT-BT lead-free piezoelectric ceramic were studied. The X-ray diffraction (XRD) patterns
show that the ceramics possess a single-phase perovskite structure. The measurements of
piezoelectric properties reveal that this system has a relatively high piezoelectric performance: the
piezoelectric constant d33 reached to 178pC/N and planar electromechanical coupling factor kp
enhanced to 0.325. The BNT-BKT-BT ternary system ceramics could be well sintered at 11500C with
a high-density ratio of more than 95% of the theoretical density. |
| doi_str_mv | 10.4028/www.scientific.net/KEM.336-338.54 |
| format | article |
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K0.5)TiO3(BKT)-BaTiO3(BT) near the morphotropic phase boundary (MPB) between the tetragonal
and rhombohedral phases has been investigated. The samples were prepared by a conventional
sintering technique. Piezoelectric properties, dielectric properties and microstructures of
BNT-BKT-BT lead-free piezoelectric ceramic were studied. The X-ray diffraction (XRD) patterns
show that the ceramics possess a single-phase perovskite structure. The measurements of
piezoelectric properties reveal that this system has a relatively high piezoelectric performance: the
piezoelectric constant d33 reached to 178pC/N and planar electromechanical coupling factor kp
enhanced to 0.325. The BNT-BKT-BT ternary system ceramics could be well sintered at 11500C with
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K0.5)TiO3(BKT)-BaTiO3(BT) near the morphotropic phase boundary (MPB) between the tetragonal
and rhombohedral phases has been investigated. The samples were prepared by a conventional
sintering technique. Piezoelectric properties, dielectric properties and microstructures of
BNT-BKT-BT lead-free piezoelectric ceramic were studied. The X-ray diffraction (XRD) patterns
show that the ceramics possess a single-phase perovskite structure. The measurements of
piezoelectric properties reveal that this system has a relatively high piezoelectric performance: the
piezoelectric constant d33 reached to 178pC/N and planar electromechanical coupling factor kp
enhanced to 0.325. The BNT-BKT-BT ternary system ceramics could be well sintered at 11500C with
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K0.5)TiO3(BKT)-BaTiO3(BT) near the morphotropic phase boundary (MPB) between the tetragonal
and rhombohedral phases has been investigated. The samples were prepared by a conventional
sintering technique. Piezoelectric properties, dielectric properties and microstructures of
BNT-BKT-BT lead-free piezoelectric ceramic were studied. The X-ray diffraction (XRD) patterns
show that the ceramics possess a single-phase perovskite structure. The measurements of
piezoelectric properties reveal that this system has a relatively high piezoelectric performance: the
piezoelectric constant d33 reached to 178pC/N and planar electromechanical coupling factor kp
enhanced to 0.325. The BNT-BKT-BT ternary system ceramics could be well sintered at 11500C with
a high-density ratio of more than 95% of the theoretical density.</abstract><pub>Trans Tech Publications Ltd</pub><doi>10.4028/www.scientific.net/KEM.336-338.54</doi><tpages>4</tpages></addata></record> |
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| title | Piezoelectric and Dielectric Properties of (Bi0.5Na0.5)TiO3- (Bi0.5K0.5)TiO3-BaTiO3 Lead-Free Piezoelectric Ceramics |
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