scholarly journals Thermal diffusivity measurements as a non destructive tool for the microstructural characterisation and the integrity assessment of thermal barrier coatings

2012 ◽  
Author(s):  
F. Cernuschi
Keyword(s):  
Thermal Diffusivity ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Integrity Assessment ◽  
Diffusivity Measurements ◽  
Microstructural Characterisation ◽  
Non Destructive

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

2013 ◽  
Vol 336 ◽  
pp. 91-96
Author(s):  
Grzegorz Moskal ◽  
Marta Mikuśkiewicz
Keyword(s):  
Thermal Conductivity ◽  
Thermal Diffusivity ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Diffusivity Measurements ◽  
Plasma Sprayed

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.

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