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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >Penetration and characteristics of an intergranular-liquid phase during sintering of CaSi_2O_5-dropped 8 mol%-yttria-stabilized zirconia estimation by impedance spectroscopy
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Penetration and characteristics of an intergranular-liquid phase during sintering of CaSi_2O_5-dropped 8 mol%-yttria-stabilized zirconia estimation by impedance spectroscopy

机译：CaSi_2O_5滴加8 mol％氧化钇稳定的氧化锆的烧结过程中晶间液相的渗透性和特征通过阻抗谱估算

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摘要

The grain-boundary resistivity of CaSi_2O_5-dropped 8 mol%-yttria-stabilized zirconia (8YSZ) was determined by impedance spectroscopy using sub-millimeter-scale electrodes. During sintering, a liquid that formed at the top surface of the specimen penetrated into the 8YSZ and induced enhanced grain growth near the surface region. The grain-boundary resistivity of the specimen surface was observed to be 150 times higher than that of the interior. The deterioration of the grain-boundary conductivity was explained in terms of the presence of an intergranular siliceous phase.
机译：通过使用亚毫米级电极的阻抗谱法，确定了CaSi_2O-5滴加的8 mol％氧化钇稳定的氧化锆（8YSZ）的晶界电阻率。在烧结过程中，在试样顶表面形成的液体渗入8YSZ，并在表面区域附近引起晶粒长大。观察到样品表面的晶界电阻率比内部高150倍。晶界硅质相的存在解释了晶界导电性的恶化。

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