Currently funded project

Ceramic composite materials (CMC) are available on the market today in higher quality and, as a result of economical production, also at lower costs than just a few years ago. In this respect, the expansion of their application possibilities is becoming increasingly interesting. The German aerospace industry should be given the opportunity to gain access to these high-performance semi-finished products.

The aim of the project is to develop textile fabric structures for tubular SiC/SiC composites. For this purpose, a sizing agent is to be developed which can be used for SiC rovings. On the other hand, multilayer fabrics are to be created which can be easily processed in the winding process to tubular components, such as flame tubes for turbine engines, and can be infiltrated. The use of multilayer fabrics should also shorten process times and reduce the risk of delamination. The following properties shall be achieved for the SiC/SiC tube:

• Wall thickness: 2,5 – 10 mm 
  
• Length: 60 – 100 mm 
  
• Diameter: 50 – 115 mm  
  
• Ring tensile strength: > 170 MPa 
  
• Bending strength at the tube segment: > 400 MPa

• Development of a suitable sizing for SiC rovings
  
• Evaluation through continuous assessment of the processing properties
  
• Weave development (simulative) and implementation of promising fabric weaves on a laboratory scale to test the processing properties in winding and infiltration processes
  
• Conversion of a weaving machine to meet the requirements of SiC rovings and production of the SiC single and multilayer fabrics
  
• Design of the winding and infiltration processes for multilayer SiC fabrics