SBIR Phase II: High Performance Lead-Free Piezoelectric Ceramics

这一小型企业创新研究第二阶段项目计划重点研究用于各种电子陶瓷和传感器应用的颗粒取向(织构)无铅压电和介电陶瓷。该项目的总体目标将是生产具有高压电性能的无铅陶瓷，并证明这些材料可以用于现有的致动器/换能器设计，特别是目前使用铅基陶瓷的应用。更广泛的影响将是消除以铅为基础的化合物，如锆钛酸铅(PZT)，目前还没有商业上可获得的具有与PZT类似性能的无铅化合物。除了商业影响外，铅还被认为是有毒的，因此含铅的商业产品在当地和全球范围内都存在严重的健康和环境危害。因此，迫切需要一种性能与铅基化合物相当的高性能、无铅的压电陶瓷，以维持压电换能器和传感器市场的增长，同时满足许多环境和健康需求。

This Small Business Innovation Research Phase II project proposes to focus on the formation of grain-oriented (textured) lead-free piezoelectric and dielectric ceramics for various electroceramic and transducer applications. The overall objective of this project will be to produce lead-free ceramics with high piezoelectric performance, and demonstrate that these materials can be used in existing actuator/transducer designs, especially for applications currently using lead-based ceramics. The broader impacts will be the elimination of lead-based compositions, such as lead zirconate titanate (PZT), there are no commercially available lead-free compositions that possess comparable properties to PZT. Beyond the commercial effect, lead is known to be toxic, so commercial products containing lead present serious health and environmental hazards at both a local and global level. Therefore, there is a substantial need for a high performance, lead-free piezoelectric ceramic with properties comparable to lead-based compositions in order to sustain the growth of piezoelectric transducers and sensor market, while meeting the many environmental and health needs.