Atomic Structure of Alloy Surfaces. 3. Ni3Al(110)

Abstract

A low energy electron-diffraction intensity analysis of a clean and annealed (110) surface of nickel aluminide reveals that the first layer is 50% Ni-50% Al and that the second layer is 100% Ni. In the first layer, the nickel and aluminum subplanes are slightly separated from one another by 0.02 + or - 0. 03 A, the Al atoms being outwards from the bulk. The first interlayer distance, as measured from the Ni subplane, is contracted by 0.15 + or - 0.03 A (11.9% of the bulk value, 1.26 A). The second interlayer distance is expanded by 0.04 + or - A (3% of the bulk value). The r-factor values for normal (0.14) and oblique (0.13) incidence indicate a very good fit of theory to experiment. Reprints.

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1986
Accession Number
ADA201551

Entities

People

  • D. Sondericker
  • F. Jona
  • P. M. Marcus

Organizations

  • Stony Brook University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Atomic Structure
  • Atoms
  • Auger Electron Spectroscopy
  • Auger Electrons
  • Buckling
  • Chemical Composition
  • Diffraction
  • Electron Diffraction
  • Electron Spectroscopy
  • Flying Submarines
  • Intensity
  • Ion Bombardment
  • New York
  • Nickel Aluminide
  • Spectra
  • Spectroscopy

Readers

  • Fluid Dynamics.
  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene