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.

ceramics

alumina

XRD

high-temperature

Ceramic

Aluminium

alloys

films

Titanium

SEM

behavior

m(n+1)ax(n) phases

Oxidation

air

Author

Marie Sonestedt

Chalmers, Applied Physics, Microscopy and Microanalysis

J. Frodelius

Linköping University

M. Sundberg

Kanthal AB

L. Hultman

Linköping University

Krystyna Marta Stiller

Chalmers, Applied Physics, Microscopy and Microanalysis

Corrosion Science

0010-938X (ISSN)

Vol. 52 12 3955-3961

Subject Categories

Materials Engineering

DOI

10.1016/j.corsci.2010.08.004