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Probing trade-off between critical size and velocity in cold-pray: An atomistic simulation

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Název: Probing trade-off between critical size and velocity in cold-pray: An atomistic simulation
Autoři: Ghasemi, Mahyar, Seifi, Alireza, Kateb, Movaffaq, 1985, Gudmundsson, J. T., Brault, Pascal, Marashi, Pirooz
Zdroj: Journal of Vacuum Science and Technology A. 42(6)
Popis: The detailed mechanism of bonding in the cold spray process has remained elusive for both experimental and theoretical parties. Adiabatic shear instability and hydrodynamic plasticity models have been so far the most popular explanations. Here, using molecular dynamics simulation, we investigate their validity at the nanoscale. The present study has potential applications in the fabrication of ultrathin layers in the electronics industry. For this aim, we considered Ti nanoparticles of different diameters and Si substrates of different orientations. It is shown that very high spray velocities are required for a jet to be observed at the nanoscale. We propose a method for thermostating the substrate that enables utilizing high spray velocities. For the first time, we demonstrate an oscillatory behavior in both the normal and radial stress components within the substrate that can propagate into the particle. We have shown that neither the adiabatic shear instability model nor the hydrodynamic plasticity model can be ignored at the nanoscale. In addition, the formation of a low-resistance titanium silicide proper for electronic application is illustrated.
Popis souboru: electronic
Přístupová URL adresa: https://research.chalmers.se/publication/543700
https://research.chalmers.se/publication/543700/file/543700_Fulltext.pdf
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  Group: Ti
  Data: Probing trade-off between critical size and velocity in cold-pray: An atomistic simulation
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  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Ghasemi%2C+Mahyar%22">Ghasemi, Mahyar</searchLink><br /><searchLink fieldCode="AR" term="%22Seifi%2C+Alireza%22">Seifi, Alireza</searchLink><br /><searchLink fieldCode="AR" term="%22Kateb%2C+Movaffaq%22">Kateb, Movaffaq</searchLink>, 1985<br /><searchLink fieldCode="AR" term="%22Gudmundsson%2C+J%2E+T%2E%22">Gudmundsson, J. T.</searchLink><br /><searchLink fieldCode="AR" term="%22Brault%2C+Pascal%22">Brault, Pascal</searchLink><br /><searchLink fieldCode="AR" term="%22Marashi%2C+Pirooz%22">Marashi, Pirooz</searchLink>
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  Data: <i>Journal of Vacuum Science and Technology A</i>. 42(6)
– Name: Abstract
  Label: Description
  Group: Ab
  Data: The detailed mechanism of bonding in the cold spray process has remained elusive for both experimental and theoretical parties. Adiabatic shear instability and hydrodynamic plasticity models have been so far the most popular explanations. Here, using molecular dynamics simulation, we investigate their validity at the nanoscale. The present study has potential applications in the fabrication of ultrathin layers in the electronics industry. For this aim, we considered Ti nanoparticles of different diameters and Si substrates of different orientations. It is shown that very high spray velocities are required for a jet to be observed at the nanoscale. We propose a method for thermostating the substrate that enables utilizing high spray velocities. For the first time, we demonstrate an oscillatory behavior in both the normal and radial stress components within the substrate that can propagate into the particle. We have shown that neither the adiabatic shear instability model nor the hydrodynamic plasticity model can be ignored at the nanoscale. In addition, the formation of a low-resistance titanium silicide proper for electronic application is illustrated.
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        Value: 10.1116/6.0003968
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            NameFull: Seifi, Alireza
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            – D: 01
              M: 01
              Type: published
              Y: 2024
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            – TitleFull: Journal of Vacuum Science and Technology A
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