氧化锆中马氏体浮凸的原子力显微镜研究及定性分析
Atomic force microscopy study and qualitative analysis of martensite relief in zirconia
摘要：
最近的一份报告[S。Deville等人，J. Am.陶瓷。索科，86（12），2225（2003）]已经显示了由原子力显微镜（AFM）提供的研究氧化锆中马氏体相变诱导的浮雕的新可能性。本文利用原子力显微镜定性研究了氧化钇和氧化铈掺杂的氧化锆从马氏体四方相到单斜相的相变过程中产生的表面起伏。原子力显微镜作为一种非常强大的工具，研究马氏体浮雕与高精度。马氏体晶体学的唯象理论可以成功地解释所有观察到的特征。讨论了马氏体的形成条件，以及局部调节相变应变的方法，即自调节变体对和微裂纹。观察到变体生长序列。这些观察为转化启动和传播序列带来了新的见解和解释。
英文摘要：
A recent report [S. Deville et al., J. Am. Ceram. Soc., 86(12), 2225 (2003)] has shown the new possibilities offered by atomic force microscopy (AFM) to investigate martensitic transformation induced relief in zirconia. In this paper, we studied qualitatively the surface relief resulting from martensitic tetragonal to monoclinic phase transformation in yttria and ceria-doped zirconia by AFM. AFM appears as a very powerful tool to investigate martensite relief with a great precision. The phenomenological theory of martensitic crystallography could be succesfully applied to explain all the observed features. The formation conditions of the martensite are discussed, as well as ways of accommodating locally the transformation strain, i.e. self-accommodating variant pairs and microcracking. Variants growth sequences are observed. These observations bring new insights and explanations on the transformation initiation and propagation sequences.
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