Thermal Conductivity Prediction in Air Plasma Sprayed Thermal Barrier Coatings Containing Multifarious Defects

2021 ◽  
Author(s):  
Xiaohui Zhao ◽  
Meng Zhao ◽  
Xiaorui Ren ◽  
Yixin Zheng ◽  
Yan Xing ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Barrier Coatings ◽  
Plasma Sprayed

Thermal conductivity of air plasma sprayed yttrium heavily-doped lanthanum zirconate thermal barrier coatings

2019 ◽  
Vol 45 (3) ◽  
pp. 3199-3206 ◽  
Author(s):  
Di Jiang ◽  
Yanfei Wang ◽  
Siqing Wang ◽  
Rongjun Liu ◽  
Jing Han
Keyword(s):  
Thermal Conductivity ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Lanthanum Zirconate ◽  
Barrier Coatings ◽  
Heavily Doped ◽  
Plasma Sprayed

scholarly journals Thermal conductivity and erosion durability of composite two-phase air plasma sprayed thermal barrier coatings

2015 ◽  
Vol 279 ◽  
pp. 44-52 ◽  
Author(s):  
Michael P. Schmitt ◽  
Amarendra K. Rai ◽  
Dongming Zhu ◽  
Mitchell R. Dorfman ◽  
Douglas E. Wolfe
Keyword(s):  
Thermal Conductivity ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Two Phase ◽  
Barrier Coatings ◽  
Plasma Sprayed

Multifarious Defects Co-Determined Thermal Conductivity in Air Plasma Sprayed Thermal Barrier Coatings

2020 ◽  
Author(s):  
Xiaohui Zhao ◽  
Meng Zhao ◽  
Yixin Zheng ◽  
Xiaorui Ren ◽  
Min Wang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Barrier Coatings ◽  
Plasma Sprayed

scholarly journals An image-based model for the sintering of air plasma sprayed thermal barrier coatings

2021 ◽  
Vol 206 ◽  
pp. 116649
Author(s):  
Xun Zhang ◽  
Alan C.F. Cocks ◽  
Yoshifumi Okajima ◽  
Kazuma Takeno ◽  
Taiji Torigoe
Keyword(s):  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Barrier Coatings ◽  
Plasma Sprayed

NONDESTRUCTIVE IMPEDANCE SPECTROSCOPY EVALUATION OF THE BOND COAT OXIDATION IN THERMAL BARRIER COATINGS

2007 ◽  
Vol 14 (05) ◽  
pp. 935-943 ◽  
Author(s):  
L. YANG ◽  
Y. C. ZHOU ◽  
W. G. MAO ◽  
Q. X. LIU
Keyword(s):  
Impedance Spectroscopy ◽  
Thermal Barrier Coatings ◽  
Bond Coat ◽  
Equivalent Circuit Model ◽  
Isothermal Oxidation ◽  
Thermally Grown Oxide ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Barrier Coatings ◽  
Plasma Sprayed

In this paper, the impedance spectroscopy technique was employed to examine nondestructively the isothermal oxidation of air plasma sprayed (APS) thermal barrier coatings (TBCs) in air at 800°C. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) were also used to characterize the microstructure evolution of TBCs. After oxidation, the thermally grown oxide (TGO), which was mainly composed of alumina as confirmed by EDX, formed at the upper ceramic coat/bond coat interface, the lower bond coat/substrate interface, and the bond coat. Impedance diagrams obtained from impedance measurements at room temperature were analyzed according to the equivalent circuit model proposed for the TBCs. Various observed electrical responses relating to the growth of oxides and the sintering of YSZ were explained by simulating the impedance spectra of the TBCs.

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