Advertisement

Journal of Materials Science

, Volume 30, Issue 5, pp 1203–1208 | Cite as

Silver-palladium submicronic powders

Part II Structural characterization
  • F. Yala
  • E. Delarue
  • M. O. Delcourt
  • C. Haut
  • C. Severac
  • C. Grattepain
Papers

Abstract

The structure of new submicronic spherical Ag-Pd powders (75/25 and 70/30 wt/wt% as spheres of mean diameter ca. 300 nm) has been investigated by various techniques. X-ray diffraction, carried out on both powder and single particles, showed two distinct metal phases, the first one being pure silver, the second one slightly alloyed palladium. X-ray microanalysis performed under SEM indicated that each grain displays intermetallic character, both metals being present in proportion close to the mean composition. Space-resolved information has been obtained by three different techniques: X-ray microanalysis carried out under transmission electron microscopy, X-ray photoelectron spectroscopy and secondary ion mass spectrometry, the three of them leading to converging results. Each grain appears as a core made of pure silver surrounded by a 10–15 nm thick layer of slightly alloyed palladium with a mean Pd/Ag ratio 89%/11% which possibly increases from inside to outside.

Keywords

Mass Spectrometry Transmission Electron Microscopy Palladium Material Processing Single Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    G. G. Ferrier, A. R. Berzins and N. M. Davey, Platinum Metals Rev. 29 (1985) 175.Google Scholar
  2. 2.
    L. C. Hoffmann, Adv. Ceram. 19 (1986) 71.Google Scholar
  3. 3.
    K. Nagashima, T. Himeda and A. Kato, J. Mater. Sci. 26 (1991) 2477.CrossRefGoogle Scholar
  4. 4.
    M. H. La Branche, J. G. Pepin and W. Borland, in “Proceedings of the ASM Thick film Conference”, Atlanta, GA, June 1988 (ASM Int., Metals Park, OH).Google Scholar
  5. 5.
    J. G. Pepin, J. Mater. Sci. Mater. Electron. 2 (1991) 34.CrossRefGoogle Scholar
  6. 6.
    S. F. Wang and W. Huebner, J. Am. Ceram. Soc. 74 (1991) 1349.CrossRefGoogle Scholar
  7. 7.
    S. F. Wang, W. Huebner and C. Y. Huang, ibid. 75 (1992) 2232.CrossRefGoogle Scholar
  8. 8.
    D. L. Thiebault, in “Precious Metals”, edited by A. K. Mehta and R. M. Nadkarni (International Metal Precious Institute; Nielson, Austen, TX, 1992) p. 257.Google Scholar
  9. 9.
    E. Delarue, M. Mostafavi, M. O. Delcourt and D. Regnault, J. Mater. Sci. 30 (1995) p. 628.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • F. Yala
    • 1
    • 4
  • E. Delarue
    • 1
  • M. O. Delcourt
    • 1
  • C. Haut
    • 2
  • C. Severac
    • 2
  • C. Grattepain
    • 3
  1. 1.Laboratoire de Physico-Chimie des RayonnementsCNRS URA 75, Bt 350, Université Paris-SudOrsay CedexFrance
  2. 2.Laboratoire de Métallurgie PhysiqueCNRS URA 1107, Bt 413, Université Paris-SudOrsay CedexFrance
  3. 3.Laboratoire de Physique des Solides de BellevueCNRS UPR 1332Meudon CedexFrance
  4. 4.Laboratoire de Métallurgie PhysiqueCNRS URA 1107, Bt 413, Université Paris-SudOrsay CedexFrance

Personalised recommendations