细晶氧化锆多晶在高温下是如何滑动的？
How do the grains slide in fine-grained zirconia polycrystals at high temperature?
摘要：
氧化锆多晶体的机械性能的退化几乎没有讨论的溶解-沉淀晶界滑动由于在高温和室温下的晶间非晶相的成像实验争议。在这里，作者应用力学光谱和透射电子显微镜（TEM）的技术来阐明在高温下的晶粒界面的非晶化，其中界面反应决定了细晶粒氧化锆多晶的行为。他们提出了机械光谱的结果，这产生了在高温下二氧化硅掺杂和高纯度氧化锆的晶间非晶相的证据。氧化锆多晶的淬火揭示了在室温下的TEM图像上的晶间非晶相。
英文摘要：
Degradation of mechanical properties of zirconia polycrystals is hardly discussed in terms of solution-precipitation grain-boundary sliding due to experimental controversies over imaging of intergranular amorphous phases at high and room temperatures. Here, the authors applied the techniques of mechanical spectroscopy and transmission electron microscopy (TEM) to shed light on the amorphization of grain interfaces at high temperature where the interface-reaction determines the behaviour of fine-grained zirconia polycrystals. They present mechanical spectroscopy results, which yield evidences of an intergranular amorphous phase in silica doped and high-purity zirconia at high temperature. Quenching of zirconia polycrystals reveals an intergranular amorphous phase on TEM images at room temperature.
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