Numerical analysis of the influence of pore microstructure on thermal conductivity and Young's modulus of thermal barrier coating

2020 ◽  
Vol 46 (15) ◽  
pp. 24326-24332 ◽  
Author(s):  
Fan Sun ◽  
Xueling Fan ◽  
Tao Zhang ◽  
Peng Jiang ◽  
Jingjing Yang
Keyword(s):  
Thermal Conductivity ◽  
Numerical Analysis ◽  
Young’S Modulus ◽  
Thermal Barrier Coating ◽  
Young's Modulus ◽  
Thermal Barrier ◽  
Barrier Coating ◽  
Pore Microstructure

Change in Young's modulus of thermal barrier coating at elevated temperature

2018 ◽  
Vol 2018.24 (0) ◽  
pp. GS0120
Author(s):  
Tomofumi SHINODA ◽  
Satoru TAKAHASHI ◽  
Hiroyuki WAKI ◽  
Masahiko KATOH
Keyword(s):  
Elevated Temperature ◽  
Young’S Modulus ◽  
Thermal Barrier Coating ◽  
Young's Modulus ◽  
Thermal Barrier ◽  
Barrier Coating

scholarly journals Phase Composition, Thermal Conductivity, and Toughness of TiO2-Doped, Er2O3-Stabilized ZrO2 for Thermal Barrier Coating Applications

Coatings ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 253 ◽  
Author(s):  
Qi Wang ◽  
Lei Guo ◽  
Zheng Yan ◽  
Fuxing Ye
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Phase Composition ◽  
Thermal Barrier Coating ◽  
Thermal Barrier ◽  
Promising Candidate ◽  
Dopant Content ◽  
Barrier Coating ◽  
M Phase ◽  
T Phase

TiO2 was doped into Er2O3-stabilized ZrO2 (ErSZ) to obtain desirable properties for thermal barrier coating (TBC) applications. The phase composition, thermal conductivity, and mechanical properties of TiO2-doped ErSZ were investigated. ErSZ had a non-transformable metastable tetragonal (t′) phase, the compound with 5 mol % TiO2 consisted of t′ and cubic (c) phases, while 10 mol % TiO2 doped ErSZ had t′, c, and about 3.5 mol % monoclinic (m) phases. Higher TiO2 doping contents caused more m phase, and the compounds were composed of t′ and m phases. When the dopant content was below 10 mol %, TiO2 doping could decrease the thermal conductivity and enhance the toughness of the compounds. At higher doping levels, the compounds exhibited an increased thermal conductivity and a reduction in the toughness, mainly attribable to the formation of the undesirable m phase. Hence, 10 mol % TiO2-doped ErSZ could be a promising candidate for TBC applications.

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