Abstract
Zirconia can be stabilized by incorporation of nitrogen. The phase relationships in the ZrO2-rich part of the system ZrO2–Zr3N4 have been investigated using high-temperature X-ray methods. At temperatures above 1000°C, a tetragonal and a cubic phase with randomly distributed vacancies exists, depending on the amount of incorporated nitrogen. This high-temperature behaviour is similar to that of systems like ZrO2–Y2O3, which is another indication for the important role of anion vacancies in zirconia systems. Below 1000°C, β-type phases with an ordered arrangement of anion vacancies are stable.
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LERCH, M., RAHAUSER, O. Subsolidus phase relationships in the ZrO2-rich part of the ZrO2–Zr3N4 system. Journal of Materials Science 32, 1357–1363 (1997). https://doi.org/10.1023/A:1018521026557
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DOI: https://doi.org/10.1023/A:1018521026557