论文标题
增强无铅BA0.85CA0.15ZR0.1TI0.9O3陶瓷的介电，电气和能量存储性能通过Sol-Gel工艺制备
Enhancing the dielectric, electrocaloric and energy storage properties of lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics prepared via sol-gel process
论文作者
论文摘要
BA0.85CA0.15ZR0.1TI0.9O3（BCZT）陶瓷通过Sol-Gel工艺成功制备，并在1420度烧结。烧结时间（2、4和6 h）对结构，微结构，电特性，能量储存和电气效应的影响。 X射线衍射（XRD）结果表明，所有样品在纯钙钛矿结构中结晶。通过Rietveld的细化鉴定并确认了从四方到正交相（T-O）的形态相变。在1420度以4H为单位的BCZT陶瓷具有98％的良好相对密度，并且具有高介电介电常数的最佳性能〜16310，大型电气效应系数〜0.244kmm/kV，能量密度的存储量为〜10.61 mJ/cm3。
The Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) ceramics were successfully prepared by sol-gel process, and sintered at 1420 degree. The effect of sintering times (2, 4 and 6 h) on structural, microstructural, electric properties, energy storage, and electrocaloric effect was systematically examined. X-ray diffraction (XRD) results show that all the samples crystallize in the pure perovskite structure. The morphotropic phase transition from the tetragonal to the orthorhombic phase (T-O) was identified and confirmed by Rietveld refinement. The BCZT ceramic sintered at 1420 degree for 4h possesses a good relative density of 98%, and exhibits optimal properties with a high dielectric permittivity ~16310, a large electrocaloric effect coefficient ~ 0.244Kmm/kV and an energy density storage of ~ 10.61 mJ/cm3.
