Diffusion study of rare-earth oxides into silica layer for environmental barrier coating applications

Warning The system is temporarily closed to updates for reporting purpose.

Dayı, Elif Nur and Al Nasiri, N. (2019) Diffusion study of rare-earth oxides into silica layer for environmental barrier coating applications. Journal of the European Ceramic Society, 39 (14). pp. 4216-4222. ISSN 0955-2219 (Print) 1873-619X (Online)

Full text not available from this repository. (Request a copy)

Abstract

The effect of exposure temperature and time on the diffusion rate of rare-earth oxides applied on silicon carbide fiber-reinforced SiC ceramic matrix composites (SiC/SiC CMCs) have been investigated. Knowledge on diffusion mechanism between the deposited rare-earth (RE) slurry and silica layer is necessary to understand the process governing EBCs formation and their properties. SEM/EDS analysis were used to study the effect of microstructure on diffusivity. The diffusion coefficient increases with increasing sintering temperature and time. The measured diffusion coefficients of the RE-coating into silica layer were in the order of 10−15-10-17 m2/s revealing an overall good adhesion on the SiC/SiC CMCs.
Item Type: Article
Uncontrolled Keywords: CMCs; Diffusion; Environmental barrier coating; RE-oxides
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Depositing User: Elif Nur Dayı
Date Deposited: 23 Jul 2023 15:39
Last Modified: 23 Jul 2023 15:39
URI: https://research.sabanciuniv.edu/id/eprint/46197

Actions (login required)

View Item
View Item