Three-dimensional investigation of ceramic/metal heterophase interfaces by atom-probe microscopy

Jörg Rüsing, Jason T. Sebastian, Olof C. Hellman, David N Seidman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The results of a three-dimensional atom probe (3DAP) analysis, on a subnanometer scale, of a ceramic/metal heterophase interface, MgO/Cu, are presented. Segregation of Ag, from the Cu (Ag) matrix, at MgO/Cu interfaces is investigated and the Gibbsian interfacial excess of silver is determined; the range is 2.33 × 1018 to 5.81 × 1018 m-2. Also, silver segregation at the same MgO/Cu interfaces is analyzed employing a new approach that utilizes a proximity histogram or proxigram.

Original languageEnglish (US)
Pages (from-to)445-451
Number of pages7
JournalMicroscopy and Microanalysis
Volume6
Issue number5
StatePublished - Sep 1 2000

Keywords

  • Ceramic/metal interfaces
  • Heterophase interfaces
  • Interfacial segregation
  • MgO/Cu
  • Proxigram
  • Silver
  • Three-dimensional atom-probe microscopy

ASJC Scopus subject areas

  • Instrumentation

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