Investigating the thermal, mechanical and thermal cyclic properties of plasma-sprayed Al2O3-7YSZ/7YSZ double ceramic layer TBCs

Double ceramic layer (DCL) TBCs consisting of a top 20 wt.% Al2O3-7YSZ layer and a bottom 7YSZ layer were desirably designed to achieve preferable performance while the thermal, mechanical and thermal cyclic properties were comprehensively investigated. Compared to the conventional 7YSZ TBCs, the th...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of the European Ceramic Society Jg. 43; H. 9; S. 4124 - 4135
Hauptverfasser: Han, Jiasen, Zou, Yong, Wu, Dongting, Zhang, Yongang
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 01.08.2023
Schlagworte:
Al2O3/7YSZ composite coating
Double ceramic layer
TBCs properties
Thermal cyclic behavior
Thermal cyclic behavior
Double ceramic layer
TBCs properties
Al2O3/7YSZ composite coating
ISSN:0955-2219, 1873-619X
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Double ceramic layer (DCL) TBCs consisting of a top 20 wt.% Al2O3-7YSZ layer and a bottom 7YSZ layer were desirably designed to achieve preferable performance while the thermal, mechanical and thermal cyclic properties were comprehensively investigated. Compared to the conventional 7YSZ TBCs, the thermal insulation properties of the DCL coating were significantly improved due to the increased oxygen vacancy concentration induced by Al2O3 addition while the thickness of the thermally grown oxides was diminished by the decreased oxygen diffusion rate. Furthermore, the improved fracture toughness of the DCL coating also prolonged the thermal cyclic life.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2023.03.004