图 书 馆
压电陶瓷方面的应用和研究Application and research in piezoceramics |
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| 课程网址: | http://videolectures.net/kolokviji_rodel_anr/ |
| 主讲教师: | Jürgen Rödel |
| 开课单位: | 达姆施塔特理工大学 |
| 开课时间: | 2011-01-10 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | The world’s market on piezoceramics is about 10 billion dollar per year. Main applications are actuators, e.g. for fuel injection and for piezomotors, sensors e.g. for parking pilot and airbag, transducers for ultrasound investigations and transformers for example for mobile phones. Legislation in the European Union has taken the lead to push for the elimination of lead in piezoceramics, which would eliminate the main material, lead-zirconate-titanate (PZT) and has lead to a world-wide effort for the quest of lead-free piezoceramics. A pathway on how to conduct a search for a completely new material based on an only approximate understanding of the current material is presented. It entails simple procedures like searching for appropriate elements based on toxicity, price, formation of appropriate crystal structures and ionic polarizability. Then it discusses some of the materials under investigation and the salient scientific questions. In particular, examples from in-situ investigations, respectively field-dependent transmission electron microscopy, field-dependent synchrotron investigations and others are highlighted. The required electrical properties are also discussed. |
| 关 键 词: | 压电陶瓷; 晶体结构; 离子极化; 透射电子显微镜 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-12-27：lxf |
| 阅读次数: | 146 |