2007
DOI: 10.4028/0-87849-424-3.147
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Time-Economic Lifetime Assessment for High Performance Thermal Barrier Coating Systems

Abstract: Abstract. Strategies for tim e-economic lifetim e assessm ent of therm al barrier coatings (TBC) in service are described and discussed on the basis of experim ental results, achieved on m aterial systems with coatings applied by electron beam physical vapour deposition. Service cycles for gas turbine blades have been sim ulated on specim ens in thermo-mechanical fatigue tests, accelerating the fatigue processes by an increase of load fre quency. Tim e dependent changes in the m aterial system were imposed by … Show more

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“…5-End of life failure of a standard EBPVD TBC material on IN100 superalloy substrate subjected to additional thermomechanical fatigue stresses via thermomechanical multiaxial fatigue testing. SEM micrograph, courtesy M. Bartsch [27] adapted by permission of TTP. Crack propagation is restricted to the c-Ni bond coat area (marked by a white circle) close below the Columnar Alumina Zone of the TGO representing both the weakest part in the bond coat and the superior cohesion of the Me/TGO interface within the layered structure of the system.…”
Section: Effect Of Tetravalent Refractory Elements Mo Re Ta W In the ...mentioning
confidence: 99%
“…5-End of life failure of a standard EBPVD TBC material on IN100 superalloy substrate subjected to additional thermomechanical fatigue stresses via thermomechanical multiaxial fatigue testing. SEM micrograph, courtesy M. Bartsch [27] adapted by permission of TTP. Crack propagation is restricted to the c-Ni bond coat area (marked by a white circle) close below the Columnar Alumina Zone of the TGO representing both the weakest part in the bond coat and the superior cohesion of the Me/TGO interface within the layered structure of the system.…”
Section: Effect Of Tetravalent Refractory Elements Mo Re Ta W In the ...mentioning
confidence: 99%