Lead-free (Ba_0.85Ca_0.15) (Ti_0.90Zr_0.10)O₃ (15/10 BCZT) piezoelectric ceramics were prepared by a standard solid solution and sintered at different temperature of 1300 °C and 1500 °C at a time. The 15/10BCZT piezoceramics were prepared at 1300 °C sintering temperature by doping different amount of MnO₂.The ceramics show a phase transition from a freoelectric tetragonal phase to a rhombohedral and tetragonal ferroelctric phase and to a single rhombohedral phase with increasing MnO₂ content. The addition of MnO₂ significantly improves the sinterbility of the 15/10BCZT piezoceramics, and reducing the sintering temperature from 1500 °C to 1300 °C by 200 °C but showing comparable piezoelectric properties. With 0.4 mol% of the dopant, ∼96.5% of the theoretical density of the ceramics was achieved with excellent piezoelectric coefficient d₃₃ ~ 534pC/N, which is nearly equal to the value obtained from the ceramics sintered at 1500 °C which has a piezoelectric coefficient d₃₃ ~ 570pC/N, high density (~ 5.59 g/cm³), maximum remnant polarization (P_r = 24 μC/cm²), relatively large grain size (10.4 μm) and the least coercieve field (E_c = 0.42 kV/mm). However, a high concentration of MnO₂ deterioated the properties of the ceramics because of increasing of oxygen vacancies and associated defects. The results indicate that the BCTZ-y mol% MnO₂ ceramics are one of the promising lead-free piezoelectric candidates for high temperature applications.

采用标准固溶体制备无铅(Ba _0.85 Ca _0.15 ) (Ti _0.90 Zr _0.10 )O ₃ (15/10 BCZT)压电陶瓷，并在1300℃和1500℃不同温度下一次烧结。15/10BCZT压电陶瓷是在1300 °C的烧结温度下通过掺杂不同量的MnO ₂制备的。随着MnO ₂含量的增加，陶瓷表现出从四方相向菱形和四方铁电相和单菱形相的相变。. MnO _{2 的添加}显着提高了 15/10BCZT 压电陶瓷的可烧结性，并将烧结温度从 1500 °C 降低到 1300 °C，降低了 200 °C，但表现出相当的压电性能。掺杂量为 0.4 mol% 时，陶瓷的理论密度约为 96.5%，压电系数 d ₃₃ ~ 534pC/N，几乎等于陶瓷在 1500 °C 下烧结获得的值，其具有压电系数 d ₃₃ ~ 570pC/N, 高密度 (~ 5.59 g/cm ³ ), 最大剩余极化 (P _r = 24 μC / cm ² ), 相对较大的晶粒尺寸 (10.4 μm) 和最小的矫顽场 (E _c= 0.42 kV/mm)。然而，由于氧空位和相关缺陷的增加，高浓度的MnO _{2 会}降低陶瓷的性能。结果表明，BCTZ-y mol% MnO ₂陶瓷是用于高温应用的有前途的无铅压电候选材料之一。