Finite element simulation of surface micro-indentation behavior of yttria stabilized zirconia thermal barrier coatings with microstructural characteristic of columnar grains and sub-grains based on a nonlinear contact model

2014 ◽  
Vol 82 ◽  
pp. 244-256 ◽  
Author(s):  
L. Wang ◽  
X.H. Zhong ◽  
J.S. Yang ◽  
S.Y. Tao ◽  
W. Zhang ◽  
...  
Keyword(s):  
Finite Element ◽  
Thermal Barrier Coatings ◽  
Yttria Stabilized Zirconia ◽  
Thermal Barrier ◽  
Stabilized Zirconia ◽  
Barrier Coatings ◽  
Element Simulation ◽  
Nonlinear Contact ◽  
Columnar Grains ◽  
Micro Indentation

Time-Dependent Behavior and Fracture of Functionally Graded Thermal Barrier Coatings under Thermal Shock

2005 ◽  
Vol 492-493 ◽  
pp. 379-384 ◽  
Author(s):  
Klod Kokini ◽  
Sudarshan V. Rangaraj
Keyword(s):  
Thermal Shock ◽  
Thermal Barrier Coatings ◽  
Functionally Graded ◽  
Yttria Stabilized Zirconia ◽  
Time Dependent ◽  
Thermal Barrier ◽  
Stabilized Zirconia ◽  
Barrier Coatings ◽  
Dependent Behavior ◽  
Bond Coat Alloy

The thermal fracture and its dependence on time-dependent behavior in functionally graded yttria stabilized zirconia - NiCoCrAlY bond coat alloy thermal barrier coatings was studied. The response of three coating architectures of similar thermal resistance to laser thermal shock tests was considered, experimentally and computationally.

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