Viscosity of liquid Al–Co alloys with a cobalt content up to 15 at %

Role of rare-earth metals (R) in the appearance of relaxation processes in AL–Ni–R metal melts

“…For the binary Al 90 Ni(Co) 10 alloys the viscosity polytherms of the melts are in good agreement with the data obtained in [50,51] (for the Al-Ni system) and [52] (for the Al-Co system). Relatively high values of the viscosity and the energy of the activation of the viscous flow of the melts of the ternary Al-Ni-Co system are expected due to the sharp growth of the viscosity values in the binary Al-Ni(Co) systems at the increase of the TM concentration [50][51][52][53].…”

“…For the binary Al 90 Ni(Co) 10 alloys the viscosity polytherms of the melts are in good agreement with the data obtained in [50,51] (for the Al-Ni system) and [52] (for the Al-Co system). Relatively high values of the viscosity and the energy of the activation of the viscous flow of the melts of the ternary Al-Ni-Co system are expected due to the sharp growth of the viscosity values in the binary Al-Ni(Co) systems at the increase of the TM concentration [50][51][52][53]. Additionally, in [32] it has been established that the replacement of nickel by cobalt in the compositions Al 86 (Ni,Co) 8 Tb 6 leads to a significant increase both in the melt viscosity values and in the values of the energy of the activation of the viscous flow at a decrease in the density; this can indicate the formation of a more 'loose' structure at the increase of the interatomic interaction energy.…”