Room temperature molecular dynamics simulations on the sintering of cu-Ag core-shell structures: Nanoparticles and nanowires

Jiaqi Wang, Seungha Shin

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

Abstract

Atomistic understanding of sintering mechanism is conducive to improve industrial applications such as printable nanoinks, electrodes, and catalysts. Nanojoining by sintering of nanoparticles and nanowires with different geometries are examined at room temperature (300K) with molecular dynamics simulations. The evolution of potential energy and local crystalline structure during sintering process are analyzed to identify sintering mechanisms. Depending on geometry, different sintering mechanisms including crystallization-Amorphization, rotation, Shockley partial dislocation are detected. In all simulation cases, Cu core does not participate in sintering process, while it plays the role of enhancing the mobility of Ag shell atoms. In nanowire sintering, a three-stage scenario is also observed, similar to that of core-shell NP sintering. The Young's modulus and yield strength of sintered nanowire obtained from tensile test are different from the reported values since they depend on many other parameters, such as NW size, strain rate, and temperature.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages1103-1110
Number of pages8
ISBN (Electronic)9781510833142
Publication statusPublished - 2016
Externally publishedYes
EventMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016 - Salt Lake City, United States
Duration: 23 Oct 201627 Oct 2016

Publication series

NameMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016
Volume2

Conference

ConferenceMaterials Science and Technology Conference and Exhibition 2016, MS and T 2016
Country/TerritoryUnited States
CitySalt Lake City
Period23/10/1627/10/16

Keywords

  • Core-shell
  • Molecular dynamics simulation
  • Nanoparticles
  • Nanowires
  • Sintering

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