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Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1141

Title: Isothermal oxidation of Ta2ALC in air
Authors: Gupta, Surojit
Filimonov, D.
Barsoum, Michel W.
Keywords: Oxidation;Polycrystalline Materials;Thermal Cycling;Crack Initiation;Phase Separation;X-Ray Analysis;Reaction Kinetics
Issue Date: Sep-2006
Publisher: Blackwell Publishing
Citation: Journal of the American Ceramic Society, 89(9): pp. 2974-2976.
Abstract: The oxidation behavior, in air, of bulk polycrystalline Ta2AlC samples was studied in the 6001–9001C temperature range. A protective, essentially X-ray amorphous, oxide layer—which does not appear to be resistant to thermal cycling—forms at 6001C. This layer is comprised of Ta, Al, and O. At 7001C and above, it is compositionally quite uniform, but porous and highly cracked. No phase separation was observed at the micrometer scale. The oxide layers consisted of the crystalline phases, Ta2O5 and TaAlO4, and an X-ray amorphous phase. In the 7001–9001C temperature range, the oxidation kinetics were found to be linear.
URI: http://hdl.handle.net/1860/1141
Appears in Collections:Faculty Research and Publications (MSE)

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