Currently funded project

Ceramics in the engine (KerTWK)

Motivation

Aircraft gas turbine with characteristic components
© MTU Aero Engines AG
Aircraft gas turbine with characteristic components

For a more environmentally friendly aviation system, it is necessary to further increase the efficiency of passenger engines. This can be achieved by improving efficiency and reducing the weight of the turbine. At present, metallic superalloys are used, but their technical possibilities are exhausted. Ceramic matrix composites (CMC) not only have a lower weight, but also have the potential to be used at higher temperatures, which leads to higher efficiencies.

 

Objective

BN coating on SiC fibres of type SA3BN Beschichtung auf SiC-Fasern vom Typ SA3
© Fraunhofer Institution IKTS
BN coating on SiC fibres of type SA3

The project aims to develop a silicon carbide (SiC/SiC) material reinforced with silicon carbide fibres to meet the requirements for use in an aircraft gas turbine. This novel material will be used to produce a demonstrator component with all necessary characteristics in terms of strength, component complexity and hot gas resistance. In cooperation with the Fraunhofer alliance ADVANCER, the main focus is on developing a reproducible manufacturing process in a closed process chain with which CMC components can be produced for the end user MTU.

Approach

Slip-based EBC layer system on a SiC model substrate
© Fraunhofer-Centre HTL
Slip-based EBC layer system on a SiC model substrate
  • Design and layout of ceramic components in the target component and development of a material model (IWM)
  • Development of a thermally and mechanically stable fibre coating: wet chemical and CVD process (IKTS und HTL)
  • Selection of suitable textile technology processes for the production of near-net-shape fibre preforms (HTL)
  • Production of benchmark samples: LSI and PIP process (IKTS and HTL)
  • Characterisation of samples with non-destructive, mechanical and thermophysical methods (HTL and IKTS)
  • Process development for the finishing of CMC components (IPK)
  • Development of a multilayer protective coating system (EBC) against hot gas corrosion (two different process routes, HTL and IKTS)

Project Data

Project Duration 01.11.2017 - 31.12.2021
Sponsor Bundesministerium für Wirtschaft und Energie
Funding Amount 891,300 Euro
Project Partners Fraunhofer-Centre HTL
Fraunhofer-Institute for Ceramic Technologies and Systems IKTS
Fraunhofer-Institute for Production Systems and Design Technology IPK
Fraunhofer-Institute for Mechanics of Materials IWM
German Aerospace Centre
FAG AG
MTU Aero Engines AG
Schunk GmbH & Co. KG
Project Coordination MTU Aero Engines AG
Project Management at the HTL
Wolfgang Bernstein