Colloid and Polymer Science

, Volume 290, Issue 10, pp 941–952

Composition-dependent sintering behaviour of chemically synthesised CuNi nanoparticles and their application in aerosol printing for preparation of conductive microstructures

  • Edit Pál
  • Robert Kun
  • Christina Schulze
  • Volker Zöllmer
  • Dirk Lehmhus
  • Marcus Bäumer
  • Matthias Busse
Original Contribution

DOI: 10.1007/s00396-012-2612-3

Cite this article as:
Pál, E., Kun, R., Schulze, C. et al. Colloid Polym Sci (2012) 290: 941. doi:10.1007/s00396-012-2612-3

Abstract

Copper, nickel and copper–nickel nanoparticles were prepared by solution combustion method for use in direct write printing. Structural (X-ray diffraction) and morphological (transmission electron microscope) investigations showed that pure metal (Cu and Ni) and CuNi alloy particles with face-centred cubic crystal structure were formed. Atomic absorption spectrometer studies confirmed that the nanoparticle compositions corresponded to the initial Cu/Ni molar ratios selected for synthesis. Particle size and morphology were significantly influenced by composition, with high Cu content coinciding with small, spherical particles as opposed to larger, irregular shapes observed at high Ni concentrations. X-ray photoelectron spectroscopy measurements revealed that after the reduction process the surface of the alloy nanoparticles was partially oxidised in air and the amount of metallic surface species decreased, while the concentration of oxidic surface species and hydroxides increased with increasing Cu concentration (i.e. decreasing particle size). Dispersions of CuNi nanoparticles have been deposited by use of AerosolJet® and sintered under reducing atmosphere at 300–800 °C in order to prepare conductive structures. Resistivity measurements and microscopical studies (SEM-FIB) of printed and sintered CuNi structures showed that the sintering properties of nanoparticles were dependent on their chemical composition.

Keywords

Nanoalloy Solution combustion Sintering Aerosol printing Conductive microstructures 

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Edit Pál
    • 1
    • 2
  • Robert Kun
    • 1
    • 2
  • Christina Schulze
    • 3
  • Volker Zöllmer
    • 4
  • Dirk Lehmhus
    • 2
  • Marcus Bäumer
    • 2
    • 3
  • Matthias Busse
    • 1
    • 2
    • 4
  1. 1.Faculty of Production EngineeringUniversity of BremenBremenGermany
  2. 2.ISIS Sensorial Material Scientific CentreUniversity of BremenBremenGermany
  3. 3.Institute of Applied and Physical ChemistryUniversity of BremenBremenGermany
  4. 4.Fraunhofer Institute for Manufacturing Technology and Advanced MaterialsBremenGermany

Personalised recommendations