由于取向生长技术可以显著地提高压电陶瓷的性能,并且不会降低材料的居里温度,故压电陶瓷的晶粒取向生长技术已成为研究的热点.本文分别从定向凝固技术、多层晶粒生长技术、模板晶粒生长技术和反应模板晶粒生长技术等四个方面,归纳和分析了近年来压电陶瓷晶粒取向生长技术的研究进展,并对压电陶瓷晶粒取向生长技术今后的研究和发展提出一些建议.
The grain orientation techniques of piezoelectric ceramics have attracted considerable attention because the grain oriented piezoelectric ceramics possess higher piezoelectric properties than polycrystalline ceramics and have the same Curie temperature as polycrystalline ceramics. In this paper, the research progress and trend of grain orientation techniques of piezoelectric ceramics are summarized with emphases on directional solidification technology, multilayer grain growth technique, templated grain growth and reactive-templated grain growth technique. The future for the developments of grain orientation techniques of piezoelectric ceramics are also proposed.