Thermal cycling and isothermal oxidation behavior of quadruple EB-PVD thermal barrier coatings

2017 ◽  
Vol 48 (6) ◽  
pp. 502-518 ◽  
Author(s):  
K. Bobzin ◽  
T. Brögelmann ◽  
C. Kalscheuer ◽  
B. Yildirim ◽  
M. Welters
Keyword(s):  
Thermal Cycling ◽  
Thermal Barrier Coatings ◽  
Oxidation Behavior ◽  
Isothermal Oxidation ◽  
Thermal Barrier ◽  
Barrier Coatings

Isothermal Oxidation Behavior of Gd2Zr2O7/YSZ Multilayered Thermal Barrier Coatings

2016 ◽  
Vol 13 (3) ◽  
pp. 443-450 ◽  
Author(s):  
Satyapal Mahade ◽  
Ran Li ◽  
Nicholas Curry ◽  
Stefan Björklund ◽  
Nicolaie Markocsan ◽  
...  
Keyword(s):  
Thermal Barrier Coatings ◽  
Oxidation Behavior ◽  
Isothermal Oxidation ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Multilayered Thermal Barrier Coatings

Delamination mechanism of thermal barrier coatings induced by thermal cycling and growth stresses

2021 ◽  
Vol 121 ◽  
pp. 105202
Author(s):  
Y.Q. Xiao ◽  
L. Yang ◽  
W. Zhu ◽  
Y.C. Zhou ◽  
Z.P. Pi ◽  
...  
Keyword(s):  
Thermal Cycling ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Growth Stresses

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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