Atomic-Level Properties of Thermal Barrier Coatings: Characterization of Metal-Ceramic Interfaces

Abstract

This chapter considers basic research related to the extreme environment of an aircraft engine and the use of Thermal Barrier Coatings (TBC s) to ameliorate the effects of extreme temperature cycling on metal engine components. The failure of these TBC s is a serious technological problem; one that, if solved, should greatly increase the fuel efficiency and operating lifetimes of airplane engines. These TBC s are comprised of ceramics, with favorably low thermal conductivity, deposited on the engine metals. Accordingly, we are concerned with the characterization of MetalCeramic (M/C) interfaces at a fundamental level. In this chapter, we attempt to provide an overview of experimental techniques for characterizing M/C interfaces. However, since we are theorists, much of the review is focused on providing a detailed, critical analysis of theoretical methods in use today to study such systems. We also give examples from our own modeling at the atomic level that has yielded some insights into the interfacial behavior of TBC s.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2001
Accession Number
ADA593548

Entities

People

  • Asbjorn Christensen
  • Emily A. Asche
  • Emily A. Carter

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Barrier Coatings
  • Chemical Analysis
  • Chemistry
  • Density Functional Theory
  • Elastic Properties
  • Electron Density
  • Electron Gas
  • Energy Bands
  • First Principles Calculations
  • Materials
  • Materials Science
  • Mechanics
  • Molecular Dynamics
  • Molecular Orbital Theory
  • Phase Transformations
  • Solid State Physics
  • Three Dimensional

Readers

  • Reinforced Composite Materials
  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.