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首页> 外文期刊>Japanese journal of applied physics >Barium Titanate Piezoelectric Ceramics Manufactured by Two-Step Sintering
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Barium Titanate Piezoelectric Ceramics Manufactured by Two-Step Sintering

机译：两步烧结制钛酸钡压电陶瓷

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摘要

Two-step sintering was applied to manufacture fine-grain barium titanate (BaTiO_3) piezoelectric ceramics from hydro-thermally synthesized 100 nm particles. Scanning electron microscopy (SEM) revealed a small and irregular domain structure in the samples. The sintering condition dependences of density, dielectric constants, and piezoelectric properties were investigated. Under the optimal conditions, dense specimens had an average grain size of approximately 1.6 μm, and showed large dielectric constants and excellent piezoelectric properties. The large piezoelectric constant of d_(33)=460 pC/N was measured using a d_(33) meter. The Curie and orthorhombic-to-tetragonal phase transition temperatures were 126 and 24 ℃, respectively. These results indicated the possibility of applying non-lead-based BaTiO_3 ceramics manufactured by a low-cost process to ultrasonic generators, actuators, piezoelectric vibrators, and sensors working at room temperature.
机译：采用两步烧结法，由水热合成的100 nm颗粒制备了细晶粒的钛酸钡（BaTiO_3）压电陶瓷。扫描电子显微镜（SEM）显示了样品中小的且不规则的畴结构。研究了烧结条件对密度，介电常数和压电性能的依赖性。在最佳条件下，致密样品的平均晶粒尺寸约为1.6μm，并显示出较大的介电常数和出色的压电性能。使用d_（33）测量仪测量d_（33）= 460 pC / N的大压电常数。居里相和正交相到四方相的转变温度分别为126和24℃。这些结果表明，有可能将通过低成本工艺制造的非铅基BaTiO_3陶瓷应用于在室温下工作的超声发生器，致动器，压电振动器和传感器。

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