Completed funded project

European ceramic fibre development and technology optimisation phase III (SiCTec3)


CMC process chain, Sic Tec 3
© Fraunhofer-Centre HTL
CMC process chain, state end of project SiCTec2

Silicon carbide fibres can be used at higher temperatures than oxide ceramic or glass fibres and have better oxidation resistance than carbon fibres. As a reinforcing component in ceramic composite materials (SiC/SiC-CMC) they are of great importance. The production of high-temperature stable SiC fibres is still based exclusively on the synthesis of expensive polycarbosilanes. The high fibre costs prevent a broad application. Furthermore, SiC fibres are only produced by a few companies in Japan or the USA, and access to the fibres by European companies is very limited.


SiC-fibre process chain
© Fraunhofer-Centre HTL
SiC-fibre process chain

In a joint project between the companies BJS Ceramics, MTU Aero Engines and the Fraunhofer Centre HTL, a high-quality SiC fibre was to be developed to enable European fibre production. The fibre used a polysilane-polycarbosilane as the starting material, which had the potential to reduce costs. The project aimed at scaling up all production steps to a maturity level of at least TRL 4. It should also demonstrate on laboratory scale that SiC fibres can be converted from Generation 2 fibres to Generation 3 fibres by chemical and thermal processes.


spool, fibre
© Fraunhofer-Centre HTL
Fibre spools
  • New polymer synthesis route without nitrogen input; pure polysilane (TRL 3-4)
  • Production of reproducible spinning masses on a kg scale (TRL 4)
  • Reproducible spinning fo polymer solutions into endless green fibre bundles > 200 m length (TRL 4)
  • Optimisation of the pyrolysis of green fibres to ceramic fibres with stoichiometric Si:C ratio (TRL 4)
  • Coating of the fibres for corrosion protection and matrix bonding (TRL 4)
  • Further processing of the coated  SiC fibres to CMCs with CVI matrix test of the SiC/SiC-CMC

Project Data

Project Duration 01.07.2015 - 31.03.2019
Sponsor Bavarian State Ministry of Economic Affairs and Media, Energy and Technology
Funding Amount 3,200,000 Euro
Project Partners Fraunhofer-Centre HTL
BJS Ceramics GmbH
MTU Aero Engines AG
Project Coordination Fraunhofer-Centre HTL
Project Management at the HTL
Arne Rüdinger