Recent developments in alumina-forming materials intermetallics

4 Recent developments in alumina-forming materials intermetallics 

Intermetallics have been developed recently, owing to their specific properties [214], Aluminides are of particular interest because they have high melting points, low densities and considerable resistance to high temperature corrosive atmospheres [215]. Their interesting properties made them excellent candidates for aeronautical applications [216-218]. 

Most alloys and superalloys have to be used at temperatures lower than 0.4 (7 being their melting point in K) because of their creep capacity, 

Two other solutions can be considered in order to improve the aluminide mechanical properties by modifying their microstructure using an iimovative elaboration process [241-243], or by applying the intermetallic compounds directly on a metal or alloy surface [33,244-251]. 

1 Effect of microstructure on the high temperature oxidation behaviour of FeAl 

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