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Coatings for High-Temperature Structural Materials Trends and Opportunities (1996) / Chapter Skim
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B RADIATION TRANSPORT IN THERMAL BARRIER COATINGS
Pages 65-66

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From page 65...
... Radiative transport of energy across a uniform coating involves a number of factors: the intensity and spectral distribution of infrared radiation in the engine enclosure in the 1- to 6-pm region infrared reflection at the coating/engine and coating/blade interfaces · scattering and absorption within the coating · radiation trapping in the coating by internal reflection of radiation Regarding the source energy distribution, the radiant energy that is incident on a coated blade or vane in the engine will have contributions from both the burning gas and the other engine surfaces. The relative contributions of these sources may change with position in the engine and blade number.
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From page 66...
... Presentation to the Committee on Coatings for EIigh-Temperature Structural Materials, National Materials Advisory Board, National Research Council, Washington D.C., February 17-18.
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Key Terms

  • infrared radiation
  • temperature distribution
  • optical properties
  • temperature gradient
  • energy transport

  • refractive index
  • materials advisory
  • index effects
  • spectral region
  • national materials

  • structural materials
  • radiant energy
  • absorption suggests
  • energy distribution
  • transport play

  • temperature optical
  • reduce radiative
  • trapping caused
  • nanostructured tbcs
  • multilayered structured

  • applied using
  • coating absorption
  • varying optical
  • influencing infrared
  • structured tbcs

  • scattering multilayered
  • coatings applied
  • vapor deposition
  • variable refractive
  • coated blade


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