Intermetallic Phase Formation at Fe-Al Film Interfaces

Authors : Güvenç TEMİZEL, Macit ÖZENBAŞ

Pages : 71-78

Doi:10.3906/tar-1204-38

View : 12 | Download : 7

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :An Fe-Al thin film system was studied for the purpose of examining the formation and development of intermetallic phases, which were formed at the aluminum insert ignore into journalissuearticles values(Al); film-steel substrate interfaces. Al films having different initial thicknesses in the range of 2m-14m m were deposited by physical vapor deposition and were then annealed at different temperatures insert ignore into journalissuearticles values(range: 300-650 °C); and for different time intervals insert ignore into journalissuearticles values(10 min-8 h);. In order to explain the formation mechanisms of the intermetallics at the mentioned Al-Fe film interfaces, X-ray diffractograms insert ignore into journalissuearticles values(XRD);, scanning electron microscopy insert ignore into journalissuearticles values(SEM);, and energy dispersive spectroscopy insert ignore into journalissuearticles values(EDS); studies were used. The results showed that the intermetallic phases FeAl2 and Fe2Al5 were the most dominant phases that could be observed, and that they were formed sequentially, in contrast to intermetallics, which formed synchronously in bulk materials.
Keywords : Intermetallics, Fe Al system, Thin films, Interfaces