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Coatings for High-Temperature Structural Materials Trends and Opportunities (1996) / Chapter Skim
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7 NEAR-TERM TRENDS AND OPPORTUNITIES
Pages 43-45

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From page 43...
... The development of durable bondcoats that can accommodate thermal expansion mismatch, combined with improved interface oxidation resistance, should be the focus of near-term research. Current knowledge of TBC failure mechanisms liesprimarily in empirical data.
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From page 44...
... In addition to these technical attributes, there are significant coatability issues that can strongly impact the cost of the coating. The choice of coating process depends on a balanced assessment of the technical attributes, the coatability issues' the cost, and the performance requirements demandedfrom the coated component.
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From page 45...
... The greatest benefit will probably be gained by defining manufacturing process capability and control, along with an improved understanding of environmental conditions and their effects. Nondestructive Evaluation Advanced NDE methods are needed to characterize hotsection turbine components at inspection points during their service life.
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Key Terms

  • coating life
  • service life
  • thermal conductivity
  • current generation
  • nde methods

  • advanced nde
  • turbine components
  • thermal barrier
  • process control
  • environmental resistance

  • key determinants
  • design analysis
  • reducing energy
  • coating technology
  • future engines

  • mcraly coatings
  • rig test
  • transport rates
  • inherent substrate
  • accurate models

  • operating temperatures
  • rely heavily
  • technical attributes
  • failure mechanisms
  • coatability issues

  • aircraft engines
  • graded layer
  • feedback controls
  • substrate environmental
  • ceramic tbcs


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