Depletion model of aluminum in bond coat for plasma-sprayed thermal barrier coatings

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The aluminum depletion of NiCrAlY bond coat in an air-plasma-sprayed thermal barrier coating (TBC) has been studied by experimental and simulative approaches. Upon thermal exposure, Al depletion regions were observed. The depletion of aluminum is resulting from Al diffusion towards the surface of bond coat and into substrate. A mathematical model of Al depletion was presented. The model is able to explain the observed results in a qualitative way and has been shown that Al depletes within the bond coat by diffusion.

Original languageEnglish
Title of host publicationSynthesis and Properties of Surface Coatings - Selected, peer reviewed papers from the 6th International Conference on Materials Processing for Properties and Performance, MP3-2007
Pages31-35
Number of pages5
DOIs
StatePublished - 2009
EventSymposium on Synthesis and Properties of Surface Coatings - 6th International Conference on Materials Processing for Properties and Performance, MP3-2007 - Beijing, China
Duration: 13 Sep 200716 Sep 2007

Publication series

NameAdvanced Materials Research
Volume75
ISSN (Print)1022-6680

Conference

ConferenceSymposium on Synthesis and Properties of Surface Coatings - 6th International Conference on Materials Processing for Properties and Performance, MP3-2007
Country/TerritoryChina
CityBeijing
Period13/09/0716/09/07

Keywords

  • Diffusion
  • Model
  • Thermal barrier coatings

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