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Reaction-based Processing of Thermal and Environmental Barrier Coatings for All-Oxide Ceramic Matrix Composites

Mechnich, Peter and Braue, Wolfgang and Schneider, Hartmut (2006) Reaction-based Processing of Thermal and Environmental Barrier Coatings for All-Oxide Ceramic Matrix Composites. 11th International Conference on Modern Materials and Technologies (CIMTEC), 2006-06-08, Acireale (I).

Full text not available from this repository.

Abstract

The protection of all-oxide ceramic matrix composites (CMC) based on alumina and mullite is a key issue for their long-term high-temperature application in corrosive atmosphere. Alumina and mullite are prone to high-temperature chemical corrosion, mainly in highly dynamic combustion atmospheres. The application of corrosion-resistant environmental barrier coatings (EBCs) is considered the only way to overcome the corrosion problem of all-oxide CMCs. Besides corrosion, alumina and mullite fibers suffer from high-temperature creep and strength loss caused by thermally induced grain growth. Therefore the development of thermal barrier coatings with low thermal conductivity is essential for all-oxide CMCs. In order to reduce costs and to improve flexibility, the deposition of coatings via reaction-based techniques is highly attractive. Reaction-bonding can be performed at moderate temperatures not exceeding the CMC processing temperature. Thermal and environmental barrier coatings have been deposited on porous WHIPOX-type CMC substrates by means of dip-coating and subsequent reaction-bonding. Examples include the deposition of reaction-bonded alumina coatings, reaction-bonded zirconia coatings, composite and multilayer coatings.

Item URL in elib:https://elib.dlr.de/46026/
Document Type:Conference or Workshop Item (Speech)
Title:Reaction-based Processing of Thermal and Environmental Barrier Coatings for All-Oxide Ceramic Matrix Composites
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mechnich, PeterUNSPECIFIEDUNSPECIFIED
Braue, WolfgangUNSPECIFIEDUNSPECIFIED
Schneider, HartmutUNSPECIFIEDUNSPECIFIED
Date:2006
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Keywords:ceramic matrix composites,environmental barrier coatings,
Event Title:11th International Conference on Modern Materials and Technologies (CIMTEC)
Event Location:Acireale (I)
Event Type:international Conference
Event Dates:2006-06-08
Organizer:World Academy of Ceramics
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Combustion Chamber Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Structural and Functional Ceramics
Deposited By: Mechnich, Dr.rer.nat. Peter
Deposited On:06 Dec 2006
Last Modified:27 Apr 2009 13:18

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