TY - JOUR
T1 - Sintering processes of two nanoparticles
T2 - A study by molecular dynamics simulations
AU - Zhu, Huilong
AU - Averback, R. S.
N1 - Funding Information:
This research was supported by the US Department of Energy, Basic Energy Sciences, under Grant No. DEFG02-91ER45439. Grants of computer time from the
PY - 1996/1
Y1 - 1996/1
N2 - Molecular-dynamics computer simulations were employed to investigate the mechanisms of sintering of two single-crystal nanoparticles of Cu at a temperature of 700 K. Owing to their ultra-fine size (4·8 nm in diameter), the local shear stresses in the necks were sufficiently large to induce plastic deformation and densification. For both aligned and randomly oriented spheres, dislocations formed in the neck glided on the normal slip system of fee Cu to the surface. The misaligned particles rotated about 17° relative to each other during deformation and formed a low-energy boundary. For the aligned nanoparticles, deformation occurred by glide of screw dislocations, but without rotation.
AB - Molecular-dynamics computer simulations were employed to investigate the mechanisms of sintering of two single-crystal nanoparticles of Cu at a temperature of 700 K. Owing to their ultra-fine size (4·8 nm in diameter), the local shear stresses in the necks were sufficiently large to induce plastic deformation and densification. For both aligned and randomly oriented spheres, dislocations formed in the neck glided on the normal slip system of fee Cu to the surface. The misaligned particles rotated about 17° relative to each other during deformation and formed a low-energy boundary. For the aligned nanoparticles, deformation occurred by glide of screw dislocations, but without rotation.
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U2 - 10.1080/095008396181073
DO - 10.1080/095008396181073
M3 - Article
AN - SCOPUS:0002303638
SN - 0950-0839
VL - 73
SP - 27
EP - 33
JO - Philosophical Magazine Letters
JF - Philosophical Magazine Letters
IS - 1
ER -