Spark plasma sintering (SPS) is an attractive method to obtain fully densified polycrystalline ceramics at rapid sintering rates. Cerium- and yttrium-doped barium zirconate, BaZr_0.7Ce_0.2Y_0.1O_3−δ, was prepared by a SPS route, resulting in high values of density of above 98%. Investigations of microstructural and crystallographic properties with determination of grain sizes were performed by means of Scanning Electron Microscopy, X-ray Diffraction and Static Light Scattering and discussed in correlation to bulk and grain boundary conductivities obtained by AC impedance spectroscopy. Samples prepared by SPS were generally found to consist of small grains that exhibit high bulk conductivities, whereas their grain boundary conductivities were comparably small, possibly also dominated by the presence of minor phases.

火花等离子体烧结（SPS）是一种以快速烧结速率获得完全致密的多晶陶瓷的有吸引力的方法。铈和钇掺杂的锆酸钡BaZr _0.7 Ce _0.2 Y _0.1 O _{3 - δ}通过SPS路线制备，导致密度值高于98％。通过扫描电子显微镜，X射线衍射和静态光散射进行了确定晶粒尺寸的微观结构和晶体学研究，并讨论了与交流阻抗谱法获得的体积和晶界电导率的关系。通常发现用SPS制备的样品由具有高整体电导率的小晶粒组成，而其晶界电导率则相对较小，可能还以次要相的存在为主。