E-resources
Peer reviewed
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Li, Ruidi; Yuan, Tiechui; Liu, Xiaojun; Zhou, Kechao
Scripta materialia, 01/2016, Volume: 110Journal Article
Display omitted The atomic diffusion of a Fe–Al system under spark plasma sintering was investigated at temperatures ranging from 773 to 873K. A significant increase in the growth rate constant of Al13Fe4 and Al5Fe2 under the pulse current of spark plasma sintering was observed compared with the absence of current. The interdiffusion coefficient under pulse current was about 46 times higher than that without current at 873K. The activation energy for the interdiffusion was 332kJ/mol, which is higher than that without current of 155–190kJ/mol. Although the diffusion kinetics were enhanced, the thermodynamics state is not altered.
