TY - GEN
T1 - Investigation of thermal shock behavior of plasma-sprayed NiCoCrAlY/YSZ thermal barrier coatings
AU - Jamali, Hossein
AU - Mozafarinia, Reza
AU - Shoja-Razavi, Reza
AU - Ahmadi-Pidani, Raheleh
PY - 2012
Y1 - 2012
N2 - ZrO2-8wt.%Y2O3 (8YSZ) thermal barrier coatings (TBCs) were deposited by atmospheric plasma spraying (APS) on NiC°CrAlY-coated Inconel 738LC substrates. The thermal shock behavior was investigated by quenching the samples in water with temperature of 20-25°C from 950°C. To study of failure mechanism results from thermal cycling, microstructural evaluation using scanning electron microscope (SEM), elemental analysis using energy dispersive spectroscopy (EDS) and phasic analysis using x-ray diffractometry (XRD) were done. The results revealed that failure of the TBC system was due to the spallation of ceramic top coat. Thermal mismatch stress was the major factor of TBC failure in thermal shock test.
AB - ZrO2-8wt.%Y2O3 (8YSZ) thermal barrier coatings (TBCs) were deposited by atmospheric plasma spraying (APS) on NiC°CrAlY-coated Inconel 738LC substrates. The thermal shock behavior was investigated by quenching the samples in water with temperature of 20-25°C from 950°C. To study of failure mechanism results from thermal cycling, microstructural evaluation using scanning electron microscope (SEM), elemental analysis using energy dispersive spectroscopy (EDS) and phasic analysis using x-ray diffractometry (XRD) were done. The results revealed that failure of the TBC system was due to the spallation of ceramic top coat. Thermal mismatch stress was the major factor of TBC failure in thermal shock test.
KW - Atmospheric plasma spraying
KW - Thermal barrier coating
KW - Thermal shock
KW - YSZ
UR - https://www.scopus.com/pages/publications/84858047719
U2 - 10.4028/www.scientific.net/amr.472-475.246
DO - 10.4028/www.scientific.net/amr.472-475.246
M3 - Conference contribution
AN - SCOPUS:84858047719
SN - 9783037853702
T3 - Advanced Materials Research
SP - 246
EP - 250
BT - Advanced Manufacturing Technology
PB - Trans Tech Publications Ltd
T2 - 3rd international Conference on Manufacturing Science and Engineering, ICMSE 2012
Y2 - 27 March 2012 through 29 March 2012
ER -