Microtexture of the thermally grown alumina in commercial thermal barrier coatings

M. Karadge, X. Zhao, M. Preuss, P. Xiao

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Microtextures of the thermally grown α-alumina (TGO) in isothermally treated and thermal cycled electron beam physical vapor deposited thermal barrier coatings (EB-PVD-TBC) and isothermally treated air plasma sprayed (APS-TBC) specimens were studied by high resolution electron back-scattered diffraction. The TGO in EB-PVD specimens exhibited a basal microtexture. The TGO in APS specimens, however, did not show any significant microtexture development.

Original languageEnglish
Pages (from-to)639-644
Number of pages6
JournalScripta Materialia
Issue number4
Publication statusPublished - Feb 2006
Externally publishedYes


  • Coatings
  • EBSD
  • Oxidation
  • Residual stress

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