THE EFFECT OF PORE SHAPE TO THE EFFECTIVE THERMAL CONDUCTIVITY OF THERMAL BARRIER COATINGS

Altun Ö., Boeke Y. E.

ASME Heat Transfer Summer Conference, Florida, Amerika Birleşik Devletleri, 10 - 14 Ağustos 2008, ss.449-457 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: Florida
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.449-457
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Effective thermal conductivity is an important parameter for the design of porous ceramic coatings that are exposed to high temperatures. Pore shapes which change in relation with the coating parameters and coating method affect the effective thermal conductivity significantly. In this study the effective thermal conductivity of 8 wt % yttria stabilized ZrO2 coating deposited by air plasma spraying have been calculated by finite element method using digital images. The effects of pore shape on effective thermal conductivity have been discussed.