| 학회 | 한국재료학회 |
| 학술대회 | 2018년 봄 (05/16 ~ 05/18, 삼척 쏠비치 호텔&리조트) |
| 권호 | 24권 1호 |
| 발표분야 | 2. 유전체/압전체의 도전과 미래(Challenges and Future for Dielectrics and Piezoelectrics)-오거나이저: 이순일 교수(창원대) |
| 제목 | Piezoelectric “SSCG” Single Crystals and Their Composites: Lead-based and Lead-free |
| 초록 | Crystallographically engineered Relaxor-PT single crystals, specifically PMN-PT and PZN-PT, offer much higher piezoelectric and electromechanical coupling coefficients (d33＞1,500 pC/N, k33＞0.9), when compared to PZT ceramics [1]. Therefore, the high performance piezoelectric single crystals have been expected to replace polycrystalline PZT ceramics in many application fields such as ultrasound transducers (medical and NDA), SONAR transducer, piezoelectric actuators, piezoelectric sensors, ultrasonic motors, piezoelectric composites and piezoelectric energy harvesting, etc. Recently the solid-state single crystal growth (SSCG) technique for fabricating the high performance “lead(Pb)-based” piezoelectric single crystals such as PMN-PT and PMN-PZT has been successfully developed [2,3]. Compared to conventional single crystal growth methods such as flux and Bridgman methods, the SSCG process is very cost-effective and suitable to mass production because a complicated melting process is not involved in the SSCG process. And the SSCG method was successfully applied to growth of high performance “lead(Pb)-free” piezoelectric single crystals (d33＞1,500 pC/N, k33＞0.9). In this presentation the recent progress on development and application of lead-based and lead-free piezoelectric “SSCG” single crystals [wafers, wedges, rings, 1-3 and 2-2 composites, and SFC (Single crystal Flexible Composite)] will be introduced. References [1] S. E. Park, T. R. Shrout, J. Appl. Phys., 82, 1804 (1997). [2] S. Zhang, S. Lee, D. Kim, H. Lee, T. Shrout, J. Appl. Phys., 102, 114103 (2007). [3] S. Zhang, S. Lee, D. Kim, H. Lee, T. Shrout, J. Am. Ceram. Soc., 90, 3859 (2007). |
| 저자 | 이호용1, 오현택2, 김동호2 |
| 소속 | 1선문대, 2(주) 세라콤 |
| 키워드 | Piezoelectric; Single Crystal; SSCG; PMN-PT; PMN-PZT |
