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TEM Observation and Study of Three-Layer Al2O3/ZrO2 Ceramics

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Abstract:

The micrograph and the crystal orientation relationship of Al2O3/ZrO2 laminated ceramics were studied with the help of transmission electronic microscope (TEM). The experiment results showed that: the Al2O3 and ZrO2 grain sizes were small and the links among the crystals were good. No flaws such as pores or micro-cracks were observed in the micro-structure. Further TEM analyses and electronic diffraction spot calculation proved that interface compressive stress could greatly restrain the transformation of the tetragonal phase and increase the contents of transformable tetragon, but did not change the orientation relation between the tetragonal and monoclinic phase, while (100)m//(010)t still exist in the three-layer ZrO2 ceramics.

Keywords: CRYSTAL ORIENTATION RELATION; TEM STUDY; THREE-LAYER ZRO2 CERAMICS; TWIN STRIPE MARTENSITIC PHASE TRANSFORMATION

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2010.2074

Publication date: 2010-03-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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