Weak Bonding of Alumina Coatings on Ni(111)

Abstract

We examine the structure and stability of an ultrathin ceramic film coating a metal substrate, specifically an alpha-alumina, Al2O3, film grown on fcc nickel. This metal-ceramic interface may play a role in materials failure of current combustion engine thermal barrier coatings (TBC's). We characterize the (0 0 0 1) surface of alpha-Al2O3 and study the effect of increasing alumina film thickness on the alumina/nickel interface using periodic slab density functional theory within the generalized gradient approximation.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2001
Accession Number
ADA639999

Entities

People

  • Asbjorn Christensen
  • Emily A. Carter
  • Emily A. Jarvis

Organizations

  • University of California, Los Angeles

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Availability
  • Barrier Coatings
  • Biochemistry
  • California
  • Chemistry
  • Classification
  • Coatings
  • Combustion
  • Contracts
  • Density Functional Theory
  • Information Operations
  • Instructions
  • Materials
  • Monitoring
  • Security
  • Substrates

Fields of Study

  • Materials science

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Surface Engineering/Surface Coating Technology.
  • Thin Film Deposition Science.