1. Abstract
WHIPOX is a fiber-reinforced porous matrix CMC developed at the German Aerospace Center (DLR). The composite consists of commercial alumina or alumino silicate fibers and mullite, mullite/alumina, or alumina matrices. WHIPOX manufacturing is based on a continuous fiber bundle infiltration and winding process. After shaping in the moist stage, green bodies of WHIPOX are sintered pressureless in air. WHIPOX CMCs display quasi-ductile deformation and excellent thermal shock resistance. Depending on fiber and matrix compositions, interlaminate shear strength values of 10 MPa and Young’s moduli of ≃150 GPa can be obtained. Thermal conductivity perpendicular to fiber orientation is about 1W/mK. The simple winding and sintering techniques and the fact that no fiber coating is required makes WHIPOX an inexpensive CMC material.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
T. Koyama, S. Hayashi, A. Yasumori, K. Okada, M. Schmücker, H. Schneider, Microstructure and mechanical properties of mullite/zirconia composites prepared from alumina and zircon under various firing conditions, J. Europ. Ceram. Soc. 16 231–237 (1996).
Y. Hirata, S. Matsushita, Y. Ishihara, H. Katsuki, Colloidal processing and mechanical properties of whisker-reinforced mullite matrix composites, J. Am. Ceram. Soc. 74 2438–2442 (1991).
K. K. Chawla, Composite materials, Science and Engineering, 2nd ed., Springer, New York (1998) pp. 212–251.
K. K. Chawla, Ceramic matrix composites 2 nd ed., Kluwer Academic Publishers, Boston (2003) pp. 291–354.
R. J. Kerans, R. S. Hay, T. A. Parthasarathy M. K. Cinibulk, Interface design for oxidation-resistant ceramic composites, J. Amer. Ceram. Soc. 85 2599–2632 (2002).
W. C. Tu, F. F. Lange, A. G. Evans, Concept for a damage-tolerant ceramic composite with “strong” interfaces, J. Amer. Ceram. Soc. 79 417–424 (1996).
H. Schneider, M. Schmücker, J. Göring, B. Kanka, J. She, P. Mechnich, Porous alumino silicate fiber/mullite matrix composites: Fabrication and properties, in “Innovative Processing and Synthesis of Ceramics, Glasses, and Composites IV” (N. P. Bansal and J. P. Singh, Editors), Ceram. Trans. 115, 415–434 (2000), Am. Ceram. Soc., Westerville, OH.
J. She, P. Mechnich, H. Schneider, M. Schmücker, B. Kanka, Effect of cyclic infiltrations on microstructure and mechanical behavior of porous mullite/mullite composites, Mat. Sci. Engg. A325 19–24 (2002).
M. Schmücker, A. Grafmüller, H. Schneider, Mesostructure of Whipox all oxide CMCs, Composites A 34 613–622 (2003).
J. Göring, S. Hackemann, H. Schneider, Oxid/Oxid-Verbundwerkstoffe: Herstellung, Eigenschaften und Anwendungen (in German), in: Keramische Verbundwerkstoffe,W. Krenkel (ed.), Wiley-VCh, Weinheim (2003), pp. 123–148.
M. Schmücker, B. Kanka, H. Schneider, Temperature-induced fiber/matrix interactions in porous alumino silicate ceramic matrix composites, J. Europ. Ceram. Soc. 20 2491–2497 (2000).
F. J. Klug, S. Prochazka, R. H. Doremus, Alumina-silica phase diagram in the mullite region, J. Am. Ceram. Soc. 70 (1987) 750–759.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Kluwer Academic Publishers
About this chapter
Cite this chapter
Schmücker, M., Schneider, H. (2005). WHIPOX All Oxide Ceramic Matrix Composites. In: Bansal, N.P. (eds) Handbook of Ceramic Composites. Springer, Boston, MA . https://doi.org/10.1007/0-387-23986-3_17
Download citation
DOI: https://doi.org/10.1007/0-387-23986-3_17
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4020-8133-0
Online ISBN: 978-0-387-23986-6
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)