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首页> 外文期刊>CERAMICS INTERNATIONAL >Phase-formation, microstructure, and piezoelectric/dielectric properties of BiYO_3-doped Pb(Zr_(0.53)Ti_(0.47))O_3 for piezoelectric energy harvesting devices
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Phase-formation, microstructure, and piezoelectric/dielectric properties of BiYO_3-doped Pb(Zr_(0.53)Ti_(0.47))O_3 for piezoelectric energy harvesting devices

机译：BiYO_3掺杂Pb（Zr_（0.53）Ti_（0.47））O_3的相形成，微观结构和压电/介电性能

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摘要

This paper proposes a method for the composition and synthesis of lead zirconate titanate (PZT) piezoelectric ceramic for use in energy harvesting systems. The proposed material consists of (1-x)Pb(Zr_(0.53)Ti_(0.47))O_3-xBiYO_3 [PZT-BY(x)] (x=0, 0.01, 0.02, 0.03, 0.04, and 0.05 mol) ceramics near the morphotropic phase boundary (MPB) region, prepared by a solid-state mixed-oxide method. The optimum sintering temperature was found to be 1160 °C, which produced high relative density for all specimens (96% of the theoretical density). Second phases were found to precipitate in the composition containing x≥0.01 mol of BY. It is shown that the addition of BY inhibits grain growth, and exhibits a denser and finer microstructure than those in the un-doped state. Fracture surface observation revealed predominant intergranular fracture for x=0 and x=0.01, while a mixed mode of transgranular and intergranular fracture appeared for x≥0.02. The optimal doping level was found to be x=0.01, for which a dielectric constant (K_(33)~T) of 750, a Curie temperature (T_C) of 373 °C, a remnant polarization (P_r) of 50 μC/cm~2, a piezoelectric constant (d_(33)) of 350 pC/N, and an electro-mechanical coupling factor (k_p) of 65% were obtained. In addition, the piezoelectric voltage constant (d_(33)), and transduction coefficient (d_(33) × g_(33)) of PZT-BY(x) ceramics have been calculated. The ceramic PZT-BY(0.01) shows a considerably lower K_(33)~T value, but higher d_(33) and k_p. Therefore, the maximum transduction coefficient (d_(33) × g_(33)) of 18,549 × 10~(-15) m~2/N was obtained for PZT-BY(0.01). The large (d_(33) × g_(33)) indicates that the PZT-BY(O.Ol) ceramic is a good candidate material for energy harvesting devices.
机译：本文提出了一种用于能量收集系统的锆钛酸铅钛酸盐（PZT）压电陶瓷的组成与合成方法。拟议的材料由（1-x）Pb（Zr_（0.53）Ti_（0.47））O_3-xBiYO_3 [PZT-BY（x）]（x = 0、0.01、0.02、0.03、0.04和0.05 mol）陶瓷组成通过固态混合氧化物方法制备的吗啉相界（MPB）区域附近。发现最佳烧结温度为1160°C，这对所有样品产生了较高的相对密度（理论密度的96％）。发现第二相在含有x≥0.01mol的BY的组合物中沉淀。结果表明，与未掺杂状态相比，BY的添加抑制了晶粒的生长，并且表现出更致密，更细的微观结构。断裂表面观察表明，x = 0和x = 0.01时主要为晶间骨折，而x≥0.02时则出现跨晶和晶间骨折的混合模式。最佳掺杂水平为x = 0.01，介电常数（K_（33）〜T）为750，居里温度（T_C）为373°C，剩余极化（P_r）为50μC/ cm 〜2，获得350pC / N的压电常数（d_（33））和65％的机电耦合系数（k_p）。另外，已经计算出PZT-BY（x）陶瓷的压电电压常数（d_（33））和转换系数（d_（33）×g_（33））。陶瓷PZT-BY（0.01）的K_（33）〜T值低很多，但d_（33）和k_p值较高。因此，PZT-BY（0.01）的最大转导系数（d_（33）×g_（33））为18,549×10〜（-15）m〜2 / N。较大的（d_（33）×g_（33））表示PZT-BY（0.01）陶瓷是能量收集设备的良好候选材料。

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