Paper Title:
Microstructural Evolution during High-Temperature Oxidation of Ti2AlN Ceramics
  Abstract

Microstructural evolution of Ti2AlN ceramics during high-temperature oxidation in air has been revealed by X-ray diffraction (XRD), field emission gun scanning electron microscopy (FEGSEM), and energy-dispersive spectroscopy (EDS). After oxidation below 1200 °C, layered microstructures formed on Ti2AlN surfaces containing anatase, rutile, and α-Al2O3. Above 1200 °C, more complex layered microstructures formed containing Al2TiO5, rutile, α-Al2O3, and continuous void layers. With increasing temperature, anatase gradually transformed to rutile, and TiO2 reacted with α-Al2O3 to form Al2TiO5. Based on these microstructural observations, an oxidation mechanism for Ti2AlN ceramics is proposed.

  Info
Periodical
Edited by
Pietro VINCENZINI, Sheldon WIEDERHORN and Paolo COLOMBO
Pages
106-111
DOI
10.4028/www.scientific.net/AST.65.106
Citation
B. Cui, R. Sa, D. D. Jayaseelan, F. Inam, M. J. Reece, W. E. Lee, "Microstructural Evolution during High-Temperature Oxidation of Ti2AlN Ceramics", Advances in Science and Technology, Vol. 65, pp. 106-111, 2010
Online since
October 2010
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$32.00
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