CMAS-resistant thermal barrier coatings (TBC)

Amarendra K. Rai, Rabi S. Bhattacharya, Douglas Edward Wolfe, Timothy John Eden

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Electron beam-physical vapor-deposited thermal barrier coatings (TBC) are susceptible to damage due to environmental contaminants such as calcium-magnesium-aluminum-silicon oxide systems (CMAS). This paper discusses various approaches of modifying TBC for enhanced protection against CMAS attack. Methodologies were explored with various coating systems maintaining functionality as nonwetting, sacrificial, and impervious to CMAS attack. In the brief isothermal (1260°C/10 min) tests, a nearly crack-free and reglazed Pd coating provided substantial protection from the CMAS attack. Approaches that provided some minor improvements need further optimization to better assess their viability.

Original languageEnglish (US)
Pages (from-to)662-674
Number of pages13
JournalInternational Journal of Applied Ceramic Technology
Volume7
Issue number5
DOIs
StatePublished - Sep 1 2010

Fingerprint

Thermal barrier coatings
Silicon oxides
Aluminum
silicon oxides
Magnesium
magnesium
calcium
Calcium
aluminum oxides
attack
coatings
Coatings
viability
contaminants
coating
Electron beams
cracks
Vapors
electron beams
methodology

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Marketing
  • Materials Chemistry

Cite this

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abstract = "Electron beam-physical vapor-deposited thermal barrier coatings (TBC) are susceptible to damage due to environmental contaminants such as calcium-magnesium-aluminum-silicon oxide systems (CMAS). This paper discusses various approaches of modifying TBC for enhanced protection against CMAS attack. Methodologies were explored with various coating systems maintaining functionality as nonwetting, sacrificial, and impervious to CMAS attack. In the brief isothermal (1260°C/10 min) tests, a nearly crack-free and reglazed Pd coating provided substantial protection from the CMAS attack. Approaches that provided some minor improvements need further optimization to better assess their viability.",
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CMAS-resistant thermal barrier coatings (TBC). / Rai, Amarendra K.; Bhattacharya, Rabi S.; Wolfe, Douglas Edward; Eden, Timothy John.

In: International Journal of Applied Ceramic Technology, Vol. 7, No. 5, 01.09.2010, p. 662-674.

Research output: Contribution to journalArticle

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