Oxidation of Ti2AlC bulk and spray deposited coatings
Artikel i vetenskaplig tidskrift, 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.

films

Oxidation

Ceramic

SEM

air

Titanium

XRD

high-temperature

ceramics

alumina

m(n+1)ax(n) phases

behavior

alloys

Aluminium

Författare

Marie Sonestedt

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

J. Frodelius

Linköpings universitet

M. Sundberg

Kanthal AB

L. Hultman

Linköpings universitet

Krystyna Marta Stiller

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

Corrosion Science

0010-938X (ISSN)

Vol. 52 12 3955-3961

Ämneskategorier

Materialteknik

DOI

10.1016/j.corsci.2010.08.004