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Crystal Research and Technology |
Cryst. Res. Technol. 40,
193 (2005) - Abstract -
A TEM study on ZrO2-rich phases in the quasibinary system ZrO2-Zr3N4: Comparison between fast and slowly cooled samples
A. T. Tham, C. Rödel*, M. Lerch*, D. Wang, D. S. Su, A. Klein-Hoffmann, and R. Schlögl
Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
*Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
A thorough comparison between the slowly and fast cooled β”-type oxynitrides of zirconium has been carried out by means of transmission electron microscopy. This work aims at detecting and analyzing the so-called “modulated” β” phase, which has been involved in the introduction of ordered anion vacancies through nitridation of zirconia. The gained information from the occurrence of such a modulated phase and the manner, in what it appears, do support the suggested structure model, which had been developed in early works in order to get a better understanding of the typical phase transitions in zirconium oxynitrides.
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