Exothermic low temperature sintering of Cu nanoparticles

Jagjiwan Mittal, Kwang Lung Lin

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Sintering of the Cu nanoparticle at low temperatures resulted in exothermic behavior after its initiation. The calorimetry study of the heating of a 20 nm copper nanoparticles agglomerate revealed the evolution of 41.17 J/g of heat between 170°C and 270°C. High resolution transmission electron microscopy (HRTEM) images indicated that the heat generation was accompanied by sintering. The surface energy of the 20 nm copper nanoparticles was estimated to be 1.23 × 103 erg/cm2 based on the heat released during sintering. The in situ high resolution transmission electron microscope (HRTEM) investigation showed that vigorous sintering occurred between 217 and 234°C, which took place through the dislocation sintering mechanism.

Original languageEnglish
Pages (from-to)19-24
Number of pages6
JournalMaterials Characterization
Volume109
DOIs
Publication statusPublished - 2015 Nov 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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