Zirconium nitride precipitation in nominally pure yttria-stabilized zirconia

Journal Article · Thu Feb 01 00:00:00 EST 1996 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1996.tb08149.x· OSTI ID:211710

Gomez-Garcia, D; Martinez-Fernandez, J; Dominguez-Rodriguez, A; Westmacott, K H ^[1]

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1. Univ. de Sevilla e Inst. de Ciencia de Materiales (Spain). Dept de Fisica de la Material Condensada

Nominally pure yttria-stabilized zirconia alloys are shown to contain unexpectedly large amounts of dissolved nitrogen. Its presence in the lattice was detected through the observation of large precipitates in alloys with three different concentrations of yttria deformed in compression in argon in the temperature range 1,600--1,800 C. Electron diffraction, EDS and PEELS analyses, and Moire imaging were used to identify the precipitates as ZrN. The possible origin of the nitrogen, its likely effects on properties, and the role of annealing atmosphere are briefly discussed.

• Sponsoring Organization: USDOE
• OSTI ID: 211710
• Journal Information: Journal of the American Ceramic Society, Vol. 79, Issue 2; Other Information: PBD: Feb 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ZIRCONIUM OXIDES
MICROSTRUCTURE
YTTRIUM OXIDES
ZIRCONIUM NITRIDES
CHEMICAL COMPOSITION
LATTICE PARAMETERS
ELECTRON DIFFRACTION
X-RAY SPECTROSCOPY
ENERGY-LOSS SPECTROSCOPY
TRANSMISSION ELECTRON MICROSCOPY
ANNEALING