Microstructure and failure analysis of suspension plasma sprayed thermal barrier coatings

0525650 - ÚFP 2021 RIV CH eng J - Journal Article
Gupta, M. - Mušálek, Radek - Tesař, Tomáš
Microstructure and failure analysis of suspension plasma sprayed thermal barrier coatings.
Surface and Coatings Technology. Roč. 382, January (2020), č. článku 125218. ISSN 0257-8972
R&D Projects: GA ČR(CZ) GA19-10246S
Institutional support: RVO:61389021
Keywords : columnar microstructure * interface roughness * lifetime * bondcoat * behavior * Thermal barrier coatings * Suspension plasma spraying * Columnar microstructure * Thermal cyclic fatigue lifetime * Interface roughness * Bondcoat microstructure
OECD category: Materials engineering
Impact factor: 4.158, year: 2020
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0257897219312083?via%3Dihub

Improvements in performance of thermal barrier coatings (TBCs) used in gas turbine engines are highly desired as they can result in higher engine efficiency leading to reduction of harmful emissions. Suspension plasma spraying (SPS) has been shown to produce high performance porous columnar TBCs that can provide low thermal conductivity and high durability. Apart from the topcoat microstructure and chemistry, the lifetime of TBCs is also dependent on bondcoat microstructure and chemistry, and topcoat-bondcoat interface roughness. In case of SPS TBCs, the interface roughness can significantly affect the columnar topcoat microstructure, thus making the bondcoat selection even more crucial.
Permanent Link: http://hdl.handle.net/11104/0309763