Fatigue Performance of TBCs on Hastelloy X Substrate during Cyclic Bending

0454450 - ÚFP 2016 RIV US eng C - Conference Paper (international conference)
Mušálek, Radek - Medřický, Jan - Pala, Zdeněk - Kovářík, O. - Tomek, L. - Curry, N. - Bjorklund, S.
Fatigue Performance of TBCs on Hastelloy X Substrate during Cyclic Bending.
Thermal Spray 2015: Proceedings from the International Thermal Spray Conference. Materials Park, OH: ASM International, 2015 - (McDonald, A.; Agarwal, A.; Bolelli, G.; Concustell, A.; Lau, Y.; Toma, F.; Turunen, E.; Widener, C.), s. 406-412. ITSC. ISBN 978-1-62708-093-4.
[ITSC 2015: International Thermal Spray Conference and Exposition. Long Beach, California (US), 11.05.2015-14.05.2015]
R&D Projects: GA ČR(CZ) GPP108/12/P552; GA ČR GB14-36566G
Institutional support: RVO:61389021
Keywords : thermal spray * thermal barrier coating * fatigue
Subject RIV: JK - Corrosion ; Surface Treatment of Materials

Our previous experiments with low-cost steel substrates confirmed that individual steps of conventional thermal barrier coating (TBC) deposition may influence fatigue properties of the coated samples differently. In this study, testing was carried out for TBC samples deposited on industrially more relevant Hastelloy X substrates. Samples were tested after each step of TBC deposition process: as-received (noncoated), grit-blasted, bond-coated (NiCoCrAlY) and bondcoated + top-coated (yttria-stabilized zirconia - YSZ). Conventional atmospheric plasma spraying (APS) with gas stabilized plasma torch was used for deposition of both bond coat and top coat. In addition, for one half of the samples, bond coat was prepared by consecutive combination of HVAF (High Velocity Air Fuel) and APS processes...
Permanent Link: http://hdl.handle.net/11104/0255141