TY - JOUR
T1 - Microstructural evolution during high-temperature oxidation of Ti2AlN ceramics
AU - Cui, Bai
AU - Sa, Rafael
AU - Jayaseelan, Daniel
AU - Inam, Fawad
AU - Reece, Michael
AU - Lee, William Edward
PY - 2010
Y1 - 2010
N2 - 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 ºC, layered microstructures formed on Ti2AlN surfaces containing anatase, rutile, and α-Al2O3. Above 1200 ºC, 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.
AB - 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 ºC, layered microstructures formed on Ti2AlN surfaces containing anatase, rutile, and α-Al2O3. Above 1200 ºC, 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.
KW - MAX Phase
KW - microstructure
KW - oxidation
U2 - 10.4028/www.scientific.net/AST.65.106
DO - 10.4028/www.scientific.net/AST.65.106
M3 - Article
SN - 1662-0356
VL - 65
SP - 106
EP - 111
JO - Advances in Science and Technology
JF - Advances in Science and Technology
ER -