High temperature oxidation resistance of materials based on МАХ-phases of Ti—Al—(C, N) system

A.V.Starostina,
 
T.Prikhna,
 
V.Sverdun,
 
V.Moshchil,
  
D.Turkevich,
 
T.Basyuk,
 
A.Kozyrev,
 
D.Litzkendorf,
 
T.Cabioc´h,
 
P.Chartier
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Modern Problems in Physical Materials Science - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2013, #22
http://www.materials.kiev.ua/article/1821

Abstract

The study of the oxidation resistance in air (by TG and DTA) of MAX-phases of 211 and 312 structural-types of Ti—Al—(C, N) systems and Ti2Al(CxN1-x)y solid solutions allowed us to conclude that Ti3AlC2 is more stable than Ti2AlC and that these carbides being more stable than Ti2Al(CxN1-x) solid solutions. When the N content was increased in Ti2Al(CxN1-x)y from 0,75% (at.), the oxidation resistance decreased. High-pressure (2 GPa) and high temperature (1400 °С) densification changed the kinetics of oxidation and improved oxidation resistance.


HIGH PRESSURES, MAX-PHASES OF TI—AL—(C, N) SYSTEMS, THERMOGRAVIMETRY AND DIFFERENTIAL THERMAL ANALYSIS