SI-SIC LigaFill® Foams and Related Net-like Structures – New Lightweight and Low-cost Materials for Spaceborne Applications
- Dr. P. J. Winkler
Published Online: 23 DEC 2005
Copyright © 2000 Wiley-VCH Verlag GmbH, Weinheim
Materials for Transportation Technology, Volume 1
How to Cite
Adler, J. and Standke;, G. (2000) SI-SIC LigaFill® Foams and Related Net-like Structures – New Lightweight and Low-cost Materials for Spaceborne Applications, in Materials for Transportation Technology, Volume 1 (ed P. J. Winkler), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606025.ch42
DaimlerChrysler AG, Forschung und Technologie, Postfach 800 465, 81663 München, Germany; Tel.: 089–607 22393; Fax: 089–607 28627
- Published Online: 23 DEC 2005
- Published Print: 20 APR 2000
Print ISBN: 9783527301249
Online ISBN: 9783527606023
- transportation technology;
- aerospace applications;
- SI-SIC LigaFill® foams;
- related net-like structures;
- lightweight and low-cost materials
The properties of silicon carbide (low CTE, high modulus, low density) are ideal for spaceborne applications as an alternative to glass-ceramics or beryllium. Some large lightweight mirrors, for example, have been made of RB-SiC or CVD-SiC over the last few years.
A simple and cost-effective way to produce very lightweight SiC materials is the replication of polymeric sponges by powder processing. Fraunhofer IKTS has been developing a new ceramic foam with high strength and stiffness (LigaFill®). Compared to usual ceramic foams, strength was enhanced by more than 600 %. The density of such foams is very low (0.2–0.3 g/cm3). LigaFill® can simply be sandwiched in SiC-C-fiber mats or in normal monolithic RBSiC plates by a paste technique, to produce components with a dense surface. As an alternative to foams, net-like ceramics (CeraNet®) can be used as well. In this way stiffness and strength can be adjusted according to the loading of the component.
There are potential applications of Si-SiC LigaFill® as mirror and reflector substructures, in thermal protection systems, as passive structural elements and as a muffler in hypersonic engines.