Reaction pathways, activation energies and mechanical properties of hybrid composites synthesized in-situ from Al–TiO2–C powder mixtures

Effects of Partial Remelting on Microstructure of Al-Si-Ti Bulk Alloy Prepared by Cold Pressing Mixed Powders

“…Subsequently, the displaced Ti element reacted with Al to form the rod-like Al 3 Ti phases, therefore validating results reported in other studies. 34) The replacement reaction between Al and Si was also carried out. However, because of the low Si concentration, the short reaction time, and the low atomic diffusivity at low temperatures, this reaction was somewhat sluggish.…”

Influences of carbon additions on reaction mechanisms and tensile properties of Al-based composites synthesized in-situ by Al–SiO2 powder system

“…That means, even if the thermodynamic conditions are attained, a reaction may not take place due to its unfavorable dynamic conditions. According to DSC curves and XRD analysis of the Al and C system reported in a previous study [18], the reaction 2 hardly took place due to the poor wettability between Al and C. Therefore, the reaction pathways among Al-SiO 2 -C system may be described as follows: firstly Al reacted with the SiO 2 to form Al 2 O 3 and Si, then the Si diffused and some of them reacted with carbon to form SiC.…”

Reaction mechanisms of the TiC/Fe composite fabricated by exothermic dispersion from Fe–Ti–C element system

“…To understand the time-dependant behavior of the reaction, the chemical reaction rate was examined and compared based on the DSC curves obtained at the heating rates of 10 K/min, 20 K/min and 30 K/min (in Fig. 5) by the method of literature [27,28]. All the reactions exhibit a similar trend, that is, they start slowly, and then accelerate rapidly, finally become slowly again.…”