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Sic to metal brazing for medium and high temperature applications

Objective

The goal of the project is to develop innovative SiC-to-metal brazing techniques for working temperatures up to 1000°C and in corrosive conditions. For thermal applications (heat exchangers), mechanical applications (seals, bearings) and electrical heater applications, the existing brazing processes do not at all meet the requirements, as they are limited to working temperature of 400°C in non aggressive media. The technical challenge is to develop a brazing process which can overcome the large thermal expansion mismatch and the chemical incompatibility between SiC and metal. The project will study an innovative and promising multi-layer composite joints approach, with successive diffusion barrier and interlayer, creating chemical and mechanical gradients between SiC and metal. Moreover, an asymmetrical heating concept will be evaluated in order to limit the mechanical stresses after cooling. The results of the project are the brazing process for each application and the demonstrators tested in working conditions

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

COMMISSARIAT A L'ENERGIE ATOMIQUE
Address
Rue Des Martyrs 17
38054 Grenoble
France

Participants (6)

AACHEN UNIVERSITY OF TECHNOLOGY
Germany
Address
Templergraben 55
52056 Aachen
AICHELIN ENTWICKLUNGSZENTRUM UND AGGREGATEBAU GMBH
Germany
Address
7,Ringstrasse 7
09569 Oederan
BURGMANN INDUSTRIES GMBH & CO. KG.
Germany
Address
Aeussere Sauerlacher Strasse 6-10
82502 Wolfratshausen
Ceratec Technical Ceramics BV
Netherlands
Address
Poppenbouwing 35
4191 NZ Geldermalsen
SCHUNK INGENIEURKERAMIK GMBH
Germany
Address
Hanns-martin-schleyer-strasse 5
47877 Willich
THALES AVIONICS SA
France
Address
Rue De Villiers 45
Neuilly Sur Seine