Microstructure and Thermal Conductivity Characteristics of Sm₂Zr₂O₇+8YSZ Type TBCs

Abstract:

The article presents results of microstructural investigations of plasma sprayed ceramic thermal barrier coatings obtained using Sm₂Zr₂O₇+8YSZ and 8YSZ powders in 50/50, 25/75 and 75/25 proportions. The coatings thickness is evaluated and spherical, horizontal and vertical porosity is quantitatively and qualitatively characterized. The results obtained in this investigation were used for adjusted values of thermal conductivity calculations on the basis of results obtained from thermal diffusivity measurements at temperatures between 20 and 1100°C.

• Periodical: Defect and Diffusion Forum (Volume 336)
• Pages: 91-96
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.336.91
• Online since: March 2013
• Authors: Grzegorz Moskal, Marta Mikuśkiewicz
• Keywords: Microstructure, Samarium Zirconates, Thermal Barrier Coating (TBC), Thermal Property

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