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EELS analysis of internal metal – oxide interfaces

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Published/Copyright: May 23, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 99 Issue 5

Abstract

The heterophase boundaries between precipitates such as spherical amorphous SiO particles inside a copper matrix as well as crystalline CuO precipitates inside a silver matrix and the surrounding metal matrix are examined with high spatial resolution using a scanning transmission electron microscope equipped with an electron energy loss spectrometer. Typical features of the electron energy loss near – edge fine structure of the oxygen O-K and of characteristic metal ionization edges allow determination of the bonding state of oxygen and thus detection of fine interlayers at the phase boundary. The results obtained are interpreted in a tentative way, supporting basic ideas of Kirchheim's structural vacancy model of oxygen segregation to metal – oxide interfaces. The model predicts that no interfacial accumulation of excess oxygen should occur to the phase boundary of amorphous precipitates. In Ag – Cu alloys there is the additional degree of freedom for the oxidation value of copper and we present indications that structural vacancies change the oxidation value at the phase boundary.

* Correspondence address, Prof. F. Haider, Inst. f. Physik, Univ. Augsburg, Universitätsstr. 1, D-86135 Augsburg, Tel.: +49 821 598 3313, E-mail:

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Received: 2007-11-26
Accepted: 2008-2-17
Published Online: 2013-05-23
Published in Print: 2008-05-01

© 2008, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Prof. Dr. Reiner Kirchheim
  5. Review
  6. Laser-assisted atom probe tomography and nanosciences
  7. Heusler films and multilayers: X-ray resonant magnetic scattering and polarized neutron reflectivity studies on the relation between structure and magnetism
  8. Perovskite-type hydrides – synthesis, structures and properties
  9. Basic
  10. Interface width of immiscible layered elements
  11. The decomposition reaction of lithium amide studied by anelastic spectroscopy and thermogravimetry
  12. Migration of faceted high-angle grain boundaries in Zn
  13. EELS analysis of internal metal – oxide interfaces
  14. Effect of Chemical Confinement on the mechanical relaxation spectra of poly(ethene-co-methacrylic acid) copolymers
  15. Applied
  16. Properties of hydrogen absorption by nano-structured FeTi alloys
  17. A subnanoscale study of the nucleation, growth, and coarsening kinetics of Cu-rich precipitates in a multicomponent Fe – Cu based steel
  18. Hydrogen absorption in 3.1 nanometre sized palladium samples: does structure matter?
  19. Ultrasonic study of short-range hydrogen ordering in Pd-hydride
  20. Homogeneity of mechanically alloyed nano-crystalline Fe – Cu-powders
  21. Formation of nickel nanoparticles in nickel – ceramic anodes during operation of solid-oxide fuel cells
  22. Characterisation of complex hydrides synthesised or modified by ball milling
  23. On the small scale character of the stress and hydrogen concentration fields at the tip of an axial crack in steel pipeline: effect of hydrogen-induced softening on void growth
  24. Notifications
  25. DGM News
https://doi.org/10.3139/146.101659

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Prof. Dr. Reiner Kirchheim
  5. Review
  6. Laser-assisted atom probe tomography and nanosciences
  7. Heusler films and multilayers: X-ray resonant magnetic scattering and polarized neutron reflectivity studies on the relation between structure and magnetism
  8. Perovskite-type hydrides – synthesis, structures and properties
  9. Basic
  10. Interface width of immiscible layered elements
  11. The decomposition reaction of lithium amide studied by anelastic spectroscopy and thermogravimetry
  12. Migration of faceted high-angle grain boundaries in Zn
  13. EELS analysis of internal metal – oxide interfaces
  14. Effect of Chemical Confinement on the mechanical relaxation spectra of poly(ethene-co-methacrylic acid) copolymers
  15. Applied
  16. Properties of hydrogen absorption by nano-structured FeTi alloys
  17. A subnanoscale study of the nucleation, growth, and coarsening kinetics of Cu-rich precipitates in a multicomponent Fe – Cu based steel
  18. Hydrogen absorption in 3.1 nanometre sized palladium samples: does structure matter?
  19. Ultrasonic study of short-range hydrogen ordering in Pd-hydride
  20. Homogeneity of mechanically alloyed nano-crystalline Fe – Cu-powders
  21. Formation of nickel nanoparticles in nickel – ceramic anodes during operation of solid-oxide fuel cells
  22. Characterisation of complex hydrides synthesised or modified by ball milling
  23. On the small scale character of the stress and hydrogen concentration fields at the tip of an axial crack in steel pipeline: effect of hydrogen-induced softening on void growth
  24. Notifications
  25. DGM News
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