High-temperature actuation performance of BiScO₃–PbTiO₃ ceramics and their multilayer configuration

摘要

Electric-field-induced strains of BiScO₃–PbTiO₃ (BS-PT) ceramics and actuation performance in multilayer configuration were investigated in the temperature range from 25u000b0;C to 250u000b0;C. Experimental results confirmed that BS-PT ceramics showed better piezoelectric temperature stability than PZT-5H ceramics, and larger strain than PZT-4 and PZT-8 ceramics at temperatures above 50u000b0;C. The strain of a BSPT multilayer actuator prepared by the silicate-cement-glue method was comparable to that of a single-layer BS-PT ceramic. Under u000b1;7.5 kV/cm electric field, the strain of a BS-PT multilayer actuator reached 0.115% at 200u000b0;C. Our work shows that BS-PT ceramics are suitable for high-temperature actuation applications.