scholarly journals Tracking the calcium-magnesium-alumino-silicate (CMAS) infiltration into an air-plasma spray thermal barrier coating using X-ray imaging

2020 ◽  
Vol 176 ◽  
pp. 94-98 ◽  
Author(s):  
Xun Zhang ◽  
Xiao Shan ◽  
Philip J. Withers ◽  
Xiaofeng Zhao ◽  
Ping Xiao
Keyword(s):  
Thermal Barrier Coating ◽  
Plasma Spray ◽  
Thermal Barrier ◽  
Air Plasma Spray ◽  
Air Plasma ◽  
X Ray ◽  
Barrier Coating ◽  
X Ray Imaging ◽  
Calcium Magnesium ◽  
Alumino Silicate

Adsorbability and spreadability of calcium-magnesium-alumino-silicate (CMAS) on Al-modified 7YSZ thermal barrier coating

2016 ◽  
Vol 42 (16) ◽  
pp. 19349-19356 ◽  
Author(s):  
X.F. Zhang ◽  
K.S. Zhou ◽  
M. Liu ◽  
C.M. Deng ◽  
C.G. Deng ◽  
...  
Keyword(s):  
Thermal Barrier Coating ◽  
Thermal Barrier ◽  
Barrier Coating ◽  
Calcium Magnesium ◽  
Alumino Silicate

HOT CORROSION OF CERIA-YTTRIA STABILIZED ZIRCONIA PLASMA SPRAYED THERMAL BARRIER COATING BY EUTECTIC VANDIUM PENTAOXIDE-SODIUM SULFATE

2018 ◽  
Vol 18 (1) ◽  
pp. 182-192 ◽  
Author(s):  
Mohammed J Kadhim ◽  
Mohammed H Hafiz ◽  
Maryam A Ali Bash
Keyword(s):  
Thermal Barrier Coating ◽  
Hot Corrosion ◽  
Monoclinic Phase ◽  
Volume Fraction ◽  
High Volume ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Plan View ◽  
Barrier Coating ◽  
Plasma Sprayed

The high temperature corrosion behavior of thermal barrier coating (TBC) systemconsisting of IN-738 LC superalloy substrate, air plasma sprayed Ni24.5Cr6Al0.4Y (wt%)bond coat and air plasma sprayed ZrO2-20 wt% ceria-3.6 wt% yttria (CYSZ) ceramic coatwere characterized. The upper surfaces of CYSZ covered with 30 mg/cm2 , mixed 45 wt%Na2SO4-55 wt% V2O5 salt were exposed at different temperatures from 800 to 1000 oC andinteraction times from 1 up to 8 h. The upper surface plan view of the coatings wereidentified for topography, roughness, chemical composition, phases and reaction productsusing scanning electron microscopy, energy dispersive spectroscopy, talysurf, and X-raydiffraction. XRD analyses of the plasma sprayed coatings after hot corrosion confirmed thephase transformation of nontransformable tetragonal (t') into monoclinic phase, presence ofYVO4 and CeVO4 products. Analysis of the hot corrosion CYSZ coating confirmed theformation of high volume fraction of YVO4, with low volume fractions of CeOV4 and CeO2.The formation of these compounds were combined with formation of monoclinic phase (m)from transformation of nontransformable tetragonal phase (t').

Sign in / Sign up

Export Citation Format

Share Document