Effect of TiO2 Content on High-Temperature Degradation Behavior of Nd2O3 and Yb2O3–Doped YSZ Composite Materials
Year: 2024
Type: article
Abstract: Hot section components of gas turbines are exposed to a high operating temperature environment. To protect these components, thermal barrier coatings (TBC) are applied to their surfaces. Yttria-stabilized zirconia (YSZ), which is widely used as a TBC material, faces limitations at temperatures above 1200℃. To mitigate these issues, research has focused on adding lanthanide rare earth oxides and tetravalent oxides to prevent the phase-transformation of the monoclinic phase in zirconia. This study investigated the effects of varying TiO2 content in Nd2O3 and Yb2O3 co-doped YSZ composites. Increasing TiO2 content effectively suppressed formation of the monoclinic phase and increased the thermal degradation resistance compared to YSZ in environments over 1200℃. These findings will aid in developing more thermally stable and efficient TBC materials for application in high-temperature environments.
Source: Hanguk bunmal jaeryo hakoeji
Authors: Gye-Won Lee, Seonung Choi, Tae-jun Park, Jong-il Kim, In-hwan Lee, Yoon-seok Oh
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Award: G3494456120
OpenAlex ID: W4403956535