by embedding an aluminum foil between two titanium sheets. Microstructural observation and EPMA characterization were employed to find the impurity diffusion coefficient of aluminum through TiAl3 and the kinetics of TiAl3 formation and growth....

and aluminum was prepared to clarify the kinetics of TiAl3 formation and growth.

2. Experimental Procedure: One pure aluminum foil (250 m thick) and two pure titanium sheets (1 mm thick) were used in a form of tri-layer sandwich providing a simple...

. However, most of the researchers have suggested that aluminum is the only or dominant diffusing component through the TiAl3 layer. On the other hand, reported data for kinetics of TiAl3 layer formation such as kinetic exponent and activation energy vary...

of pre-combustion reactions temperature, powder mixtures were DTA analyzed. According to Scanning Electron Microscopy and X-ray Diffraction Analysis the first phase forms in the Al-Ti interface is TiAl3 for all of powder mixtures. However...

results TiAl3 is the only phase which forms in different temperatures. At 750 ºC, thickness of TiAl3 layer increases slowly to 20 μm. After 3 hours, TiAl3 thickness quickly increases to about 500 μm. Presumably reaction starts with solving titanium...

results, TiAl3 is the only phase can form at the interface. Observations revealed that intermetallic layer thickness increases slowly at primary stages. After that an enhanced growth rate occurs due to layer cracking and disruption. Presumably, reaction...

results revealed that a TiAl3 intermetallic layer has formed and thickened between the layers. Grain boundaries of the TiAl3 compound, which were revealed by back-scattered electron imaging, indicated a size distribution across the layer. Finer grains...