权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of new orientation control technique for Perovskite-type piezoelectric ceramics utilizing rolling-extended method

利用轧制拉伸法开发钙钛矿型压电陶瓷取向控制新技术

基本信息

批准号：
23560815
负责人：
ISHII Keisuke
金额：
$ 3.41万
依托单位：
防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2011
资助国家：
日本
起止时间：
2011 至 2013
项目状态：
已结题

项目摘要

The effective orientation control technique for (K,Na)NbO3(KNN) system ceramics which are typical lead-free Perovskite type piezoelectric materials were established. This technique mainly consists of the rolling-extend method and the improved single-step molten salt method for preparing plate-like NaNbO3(NN) templates. NN templates, by which the highly textured ceramics are obtained, were synthesized in high-yield by optimizing mixture ratio of the starting materials. The textured KNN system ceramics with the orientation factor higher than 95% were fabricated by employing these NN templates and preheating technique. In addition, the spin-forming-extended method, which is the improved rolling-extended method, was developed for orientation control of tungsten-bronze-structured piezoelectric ceramics. By utilizing this technique, the large rectangular ceramics c-axis oriented in the thickness direction, are easily fabricated.

建立了典型的无铅钙钛矿型压电材料(K，Na)NbO_3(KNN)系陶瓷的有效取向控制技术。该技术主要包括滚动延伸法和改进的一步熔盐法制备板状NbO_3(NN)模板。通过优化原料配比，高产率地合成了高织构陶瓷的NN模板。利用这些NN模板和预热技术制备了取向因子大于95%的织构KNN系陶瓷。此外，还发展了一种改进的滚压延伸法，即旋压延伸法，用于钨青铜结构压电陶瓷的取向控制。利用这种技术，可以很容易地制备出沿厚度方向取向的大型矩形陶瓷c轴。