Work

A review on environmental barrier coatings: History, current state of the art and future developments

Year: 2020

Type: article

Abstract: The increasing demand for more efficient and environmental-friendly gas turbines has driven the development of new strategies for material development. SiC/SiC ceramic matrix composites (CMCs) can fulfil the stringent requirements; however, they require protection from the operating environment and debris ingested during operation. Environmental barrier coatings (EBCs) are a protective measure to enable the CMCs to operate under harsh conditions. EBC-coated CMCs will enable an increased efficiency and reduced pollutant and CO2 emissions. In this review, the fundamentals of SiC/SiC ceramic matrix composites degradation in steam environments and under the presence of corrosive species, namely CaO-MgO-Al2O3-SiO2 (CMAS), are first presented. Then, a summary of EBCs along with a comprehensive summary of the current compositions and their interactions with steam and molten corrosive species is presented. Finally, an overview of the latest research directions for the potential next generation of EBCs are outlined.

Source: Journal of the European Ceramic Society

DOI: 10.1016/j.jeurceramsoc.2020.10.057

Authors: Daniel Tejero-Martin, Chris Bennett, Tanvir Hussain

Institution: University of Nottingham

Language: English

Topic: High-Temperature Coating Behaviors

Subfield: Surfaces, Coatings and Films

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funder: Engineering and Physical Sciences Research Council