Surface relief associated with isothermal martensite in zirconia-3-mol%-yttria ceramics observed by atomic force microscopy
Surface relief associated with isothermal martensite in zirconia-3-mol%-yttria ceramics observed by atomic force microscopy
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DOI：
10.1111/j.1151-2916.1999.tb02180.x
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发表时间：
2004-12
影响因子：
3.9
通讯作者：
H. Tsubakino;Y. Kuroda;M. Niibe
中科院分区：
文献类型：
--
作者：
H. Tsubakino;Y. Kuroda;M. Niibe
通过原子力显微镜观察到与马氏体相变-四斜-单斜相变-发生在400和473 K的温度下等温老化过程中，使用预抛光和热蚀刻表面的氧化锆-3摩尔%的氧化钇，在1923 K的温度下烧结5小时。等温马氏体相变首先发生在晶界，随着时效时间的增加，马氏体相变进入晶粒内部，然后依次扩展到周围的晶粒。随着时效时间的延长，相变区逐渐增大，其形状近似于圆形。表面浮雕的精细结构是由许多帐篷形状组成的，这些帐篷形状是几个纳米高的，角度为165°。
Surface relief associated with martensitic transformation—tetragonal-to-monoclinic phase transformation—that occurred during isothermal aging at temperatures of 400 and 473 K was observed via atomic force microscopy, using prepolished and thermally etched surfaces of zirconia–3 mol% yttria that was sintered at a temperature of 1923 K for 5 h. The isothermal martensitic transformation occurred first at grain boundaries and advanced into grain interiors as the aging time increased and then spread successively into the surrounding grains. The transformation area, which had an approximately round shape, increased as the aging time increased. The fine structure of the surface relief was composed of many tent shapes that were several nanometers high with an angle of ∼165°.