scholarly journals Thermal property measurement for thermal barrier coatings using pulsed thermal imaging – multilayer analysis method

2016 ◽  
Author(s):  
J. G. Sun ◽  
N. Tao
Keyword(s):  
Thermal Property ◽  
Thermal Barrier Coatings ◽  
Thermal Imaging ◽  
Thermal Barrier ◽  
Analysis Method ◽  
Barrier Coatings ◽  
Property Measurement ◽  
Thermal Property Measurement

Evaluation of Plasma Sprayed Thermal Barrier Coatings Using NDE and SEM

2007 ◽  
Author(s):  
Abbas Fahr ◽  
Catalin Mandache ◽  
Marc Genest ◽  
Weijie Chen ◽  
Xijia Wu ◽  
...  
Keyword(s):  
Thermal Barrier Coatings ◽  
Eddy Current ◽  
Thermal Imaging ◽  
Bond Coat ◽  
Elevated Temperatures ◽  
Internal Stresses ◽  
Thermal Barrier ◽  
Infrared Thermal Imaging ◽  
Barrier Coatings ◽  
Metallic Bond

Thermal barrier coatings (TBC) are used to protect the hot section components of gas turbine engines from high temperatures. A TBC system consists of a ceramic topcoat and a metallic bond coat sprayed or deposited onto the metal substrate. TBC failure is often associated with oxidation of the metallic bond coat at elevated temperatures via formation of thermally grown oxides (TGO) that cause internal stresses leading to the final spallation of the TBC. The present study explores the application of eddy current and infrared thermal imaging techniques for the detection of TGO in thermally-exposed TBC with a view of finding the damage criteria and a suitable solution for nondestructive evaluation (NDE) of TBC. The eddy current technique is based on the induction of an electromagnetic field and is sensitive to minute changes in electrical or magnetic properties of the test piece while infrared thermal imaging is based on thermal diffusion process and measures small differences in surface temperature. The NDE results are validated through destructive testing and microscopic examination of the TBC samples in as-sprayed condition and after exposure to elevated temperatures.

Effects of Er Stabilization on Thermal Property and Failure Behavior of Gd2Zr2O7 Thermal Barrier Coatings

2021 ◽  
pp. 109418
Author(s):  
Zaoyu Shen ◽  
Guanxi Liu ◽  
Rende Mu ◽  
Limin He ◽  
Zhenhua Xu ◽  
...  
Keyword(s):  
Thermal Property ◽  
Thermal Barrier Coatings ◽  
Failure Behavior ◽  
Thermal Barrier ◽  
Barrier Coatings

scholarly journals Thermal property evolution of metal based thermal barrier coatings with heat treatments

2007 ◽  
Vol 42 (15) ◽  
pp. 5915-5923 ◽  
Author(s):  
Dong-Il Shin ◽  
François Gitzhofer ◽  
Christian Moreau
Keyword(s):  
Thermal Property ◽  
Thermal Barrier Coatings ◽  
Heat Treatments ◽  
Thermal Barrier ◽  
Barrier Coatings
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