A new low-temperature firable 0.95Pb(ZrxTi1-x)O3-0.05Bi(Mn1/2Ti1/2)O3 ceramic for high-power applications

作者：Zhang, Bo; Qi, He; Zuo, Ruzhong^*

来源：Ceramics International, 2018, 44(5): 5453-5458.

DOI：10.1016/j.ceramint.2017.12.178

• Piezoelectric ceramics
• High-power application
• Low-temperature sintering
• Morphotropic phase boundary
• Defect dipole

A new ternary solid-solution piezoelectric ceramic of 0.95Pb(ZrxTi1-x)O-3 - 0.05Bi(Mn1/2Ti1/2)O-3 (x = 0.49-0.55) was successfully prepared via a conventional solid-state reaction. The crystal structure was found to gradually transform from tetragonal to rhombohedral phases with increasing the Zr/Ti ratio. A morphotropic phase boundary was realized in the proximity of x = 0.51, which exhibited optimum electromechanical properties of d(33) = 275 pC/N, epsilon(T)(33)/epsilon(0) = 1226, k(p) = 0.53, Q(m) = 1164, tan delta = 0.66% and T-c = 341 degrees C as sintered at a relatively low temperature of 1120 degrees C. Compared with typical Pb-based complexperovskites such as Pb(Mn1/3Nb2/3)O-3 and Pb(Mn1/3Sb2/3)O-3, the substitution of Bi(Mn1/2Ti1/2)O-3 provides obvious advantages in both sintering temperature and raw material cost. The achievement of piezoelectric and electromechanical properties was interpreted by means of a typical model concerning the interaction between defect dipoles and domains through comparative experiments. The desirable properties of the studied material system suggest a great potential for high-power device applications.

• 出版日期2018-4-1
• 单位合肥工业大学