Influences of interface morphology and thermally grown oxide thickness on residual stress distribution in thermal barrier coating system

2016 ◽  
Vol 42 (7) ◽  
pp. 8338-8350 ◽  
Author(s):  
Q.M. Yu ◽  
H.L. Zhou ◽  
L.B. Wang
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Thermal Barrier Coating ◽  
Oxide Thickness ◽  
Thermally Grown Oxide ◽  
Residual Stress Distribution ◽  
Thermal Barrier ◽  
Coating System ◽  
Interface Morphology ◽  
Barrier Coating

scholarly journals Investigation on the Interface Characteristics of the Thermal Barrier Coating System through Flat Cylindrical Indenters

2014 ◽  
Vol 6 ◽  
pp. 654096
Author(s):  
Shifeng Wen ◽  
Xiaohu Zeng ◽  
Gongnan Xie
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Thermal Barrier Coating ◽  
Thermally Grown Oxide ◽  
Interface Roughness ◽  
Thermal Barrier ◽  
The Finite Element Method ◽  
Barrier Coating ◽  
Interface Characteristics ◽  
Prolonged Heat

Thermal barrier coating (TBC) systems are highly advanced material systems and usually applied to insulate components from large and prolonged heat loads by utilizing thermally insulating materials. In this study, the characteristics of the interface of thermal barrier coating systems have been simulated by the finite-element method (FEM). The emphasis was put on the stress distribution at the interface which is beneath the indenter. The effect of the interface roughness, the thermally grown oxide (TGO) layer's thickness, and the modulus ratio (η) of the thin film with the substrate has been considered. Finite-element results showed that the influences of the interface roughness and the TGO layer's thickness on stress distribution were important. At the same time, the residual stress distribution has been investigated in detail.

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