2013 Fiscal Year Final Research Report
Development of grain oriented multilayer ceramic actuator using bismuth based lead-free perovskites
| Project/Area Number |
23760643
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Inorganic materials/Physical properties
|
|---|
| Research Institution | Tokyo University of Science |
|---|
Principal Investigator |
NAGATA Hajime 東京理科大学, 理工学部, 准教授 (70339117)
|
|---|
| Project Period (FY) |
2011 – 2013
|
| Keywords | 非鉛圧電セラミックス / チタン酸ビスマスカリウム / 積層セラミックアクチュエータ / 粒子配向セラミックス |
|---|
| Research Abstract |
Lead-based piezoelectric ceramics of Pb(Zr,Ti)O3 (PZT) are widely used in piezoelectric devices such as ultrasonic generators, sensors, resonators, and actuators. Recently, there has been a strong demand to develop environmentally friendly, that is, lead-free ferroelectric and piezoelectric ceramics. (Bi1/2K1/2)TiO3 [BKT] is one of bismuth based perovskite materials and showing high Curie temperature at approximately 400 oC and relatively large piezoelectric strain constant d33 about 100 pC/N. Therefore, BKT ceramics have been paid attention as one of candidates for lead-free piezoelectric actuator materials. In this study, we demonstrated multilayer piezoelectric actuators by using lead-free BKT ceramics and showing good electrical properties as compared with bulk BKT ceramics.
|
