Oxidation of Ti2AlC bulk and spray deposited coatings
Journal article, 2010
The oxidation behaviour of Ti2AlC bulk and high velocity oxy-fuel spray deposited coatings has been investigated for temperatures up to 1200 degrees C. X-ray diffraction and electron microscopy show that bulk Ti2AlC forms a continuous layer of alpha-Al2O3 below a layer of TiO2 at temperatures as low as 700 degrees C. Oxidation of the Ti2AlC coatings is more complex, and also involves the phases Ti3AlC2, TiC, and TixAly, formed during the spraying process. alpha-Al2O3 is observed, however, it is unevenly distributed deep into the material, and does not form a continuous layer essential for good oxidation resistance.
Aluminium
m(n+1)ax(n) phases
alumina
Ceramic
high-temperature
ceramics
XRD
SEM
Oxidation
Titanium
films
air
alloys
behavior
Author
Marie Sonestedt
Chalmers, Applied Physics, Microscopy and Microanalysis
J. Frodelius
Linkopings universitet
M. Sundberg
Kanthal AB
L. Hultman
Linkopings universitet
Krystyna Marta Stiller
Chalmers, Applied Physics, Microscopy and Microanalysis
Corrosion Science
0010-938X (ISSN)
Vol. 52 12 3955-3961Subject Categories (SSIF 2011)
Materials Engineering
DOI
10.1016/j.corsci.2010.08.004