Thermal Imaging Measurement Accuracy for Thermal Properties of Thermal Barrier Coatings

2011 ◽  
pp. 15-22 ◽  
Author(s):  
J. G. Sun
Keyword(s):  
Thermal Properties ◽  
Thermal Barrier Coatings ◽  
Thermal Imaging ◽  
Measurement Accuracy ◽  
Thermal Barrier ◽  
Barrier Coatings

Pulsed Thermal Imaging Measurement of Thermal Properties for Thermal Barrier Coatings Based on a Multilayer Heat Transfer Model

2014 ◽  
Vol 136 (8) ◽  
Author(s):  
J. G. Sun
Keyword(s):  
Heat Transfer ◽  
Thermal Properties ◽  
Surface Temperature ◽  
Thermal Barrier Coatings ◽  
Thermal Imaging ◽  
Temperature Response ◽  
Heat Transfer Model ◽  
Thermal Barrier ◽  
Transfer Model ◽  
Barrier Coatings

Thermal properties of thermal barrier coatings (TBCs) are important parameters for the safe and efficient operation of advanced turbine engines. This paper presents a new method, the pulsed thermal imaging–multilayer analysis (PTI–MLA) method, which can measure the coating thermal conductivity and heat capacity distributions over an entire engine component surface. This method utilizes a multilayer heat transfer model to analyze the surface temperature response acquired from a one-sided pulsed thermal imaging experiment. It was identified that several experimental system parameters and TBC material parameters may affect the coating surface temperature response. All of these parameters were evaluated and incorporated as necessary into the formulations. The PTI–MLA method was demonstrated by analyzing three TBC samples, and the experimental results were compared with those obtained from other methods.

Design, Preparation and Thermal Properties of (La0.4Sm0.5Yb0.1)2Zr2O7 Ceramic for Thermal Barrier Coatings

2012 ◽  
Vol 512-515 ◽  
pp. 469-473 ◽  
Author(s):  
L. Liu ◽  
Z. Ma ◽  
F.C. Wang ◽  
Q. Xu
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Thermal Properties ◽  
Rare Earth ◽  
Thermal Expansion Coefficient ◽  
Thermal Barrier Coatings ◽  
Expansion Coefficient ◽  
Phonon Transport ◽  
Thermal Barrier ◽  
Barrier Coatings

According to the theory of phonon transport and thermal expansion, a new complex rare-earth zirconate ceramic (La0.4Sm0.5Yb0.1)2Zr2O7, with low thermal conductivity and high thermal expansion coefficient, has been designed by doping proper ions at A sites. The complex rare-earth zirconate (La0.4Sm0.5Yb0.1)2Zr2O7 powder for thermal barrier coatings (TBCs) was synthesized by coprecipitation-calcination method. The phase, microstructure and thermal properties of the new material were investigated. The results revealed that single phase (La0.4Sm0.5Yb0.1)2Zr2O7 with pyrochlore structure was synthesized. The thermal conductivity and the thermal expansion coefficient of the designed complex rare-earth zirconate ceramic is about 1.3W/m•K and 10.5×10-6/K, respectively. These results imply that (La0.4Sm0.5Yb0.1)2Zr2O7 can be explored as the candidate material for the ceramic layer in TBCs system.

scholarly journals Porous architecture and thermal properties of thermal barrier coatings deposited by suspension plasma spray

2020 ◽  
Vol 386 ◽  
pp. 125462 ◽  
Author(s):  
Yongli Zhao ◽  
Juhong Wen ◽  
François Peyraut ◽  
Marie-Pierre Planche ◽  
Shantanu Misra ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Thermal Barrier Coatings ◽  
Plasma Spray ◽  
Suspension Plasma Spray ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Porous Architecture

Characterisation of the microstructure and thermal properties of Nd2Zr2O7 and Nd2Zr2O7/YSZ thermal barrier coatings

2012 ◽  
Vol 32 (9) ◽  
pp. 2035-2042 ◽  
Author(s):  
G. Moskal ◽  
L. Swadźba ◽  
M. Hetmańczyk ◽  
B. Witala ◽  
B. Mendala ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Barrier Coatings
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