Temperature stable and fatigue resistant lead-free ceramics for actuators

• DOI: 10.1063/1.4964411
• Publication Date: 2016-10-06T17:00:49Z
• Authors: Amir Khesro; Dawei Wang; Fayaz Hussain; Derek C. Sinclair; Antonio Feteira; Ian M. Reaney
• Keywords: Strain (injury); Lead (geology)

Lead-free ceramics with the composition 0.91K1/2Bi1/2TiO3–0.09(0.82BiFeO3-0.15NdFeO3-0.03Nd2/3TiO3) were prepared using a conventional solid state, mixed oxide route. The exhibited high strain of 0.16% at 6 kV mm−1, stable from room temperature to 175 °C, variation <10%. materials fabricated into multilayer structures by co-firing Pt internal electrodes. prototype actuator constant strains up 300 °C ∼15%. showed fatigue resistant behaviour in both monolithic and form after bipolar loading 106 cycles.