Fiber-reinforced ceramic composites

Fig. 3. Tensile stress—strain curve for (-) reinforced ceramic and ( " ) fiber-reinforced ceramic composite. A represents the point where the matrix...

FIBER REINFORCED CERAMIC COMPOSITES edited by K. S. Mazdiyasni... 

Lackey, W. J., Review, Status and Future of the CVI Process for Fabrication of Fiber-Reinforced Ceramic Composites, Ceram. Eng. Sci. Proc., 10(7-8) 577-584 (1989)... 

Marshall, D.B. and Oliver, W.C. (1987). Measurement of interfacial mechanical properties in fiber-reinforced ceramic composites. J. Am. Ceram. Soc. 70, 542 548. 

Singh, R.N. (1993), Interfacial properties and high temperature mechanical behavior of fiber reinforced ceramic fiber reinforced ceramic composites. Mater. Sci. Eng. A 166, 185-198. 

Effect of increasing AT on stress-displacement curves of Nicalon /SiC (CVI) - solid line corresponds to unshocked sample (reprinted from Wang et al. 1996, Thermal shock behaviour of two-dimensional woven fiber-reinforced ceramic composites, ... 

Following the multiple matrix cracking, the composite can continue to carry the load until fiber failure. The ultimate tensile strengths of several continuous fiber-reinforced ceramic composites versus temperatures are shown in Fig. 

Fig. 2.8 Tensile strength versus temperature for several fiber-reinforced ceramic composites.49-52 56 57...

Fig. 2.14 Fracture mechanism map for uniaxially fiber-reinforced ceramic composites under tensile loading.72...

S. V. Nair, K. Jakus, and T. Lardner, The Mechanics of Matrix Cracking in Fiber-Reinforced Ceramic Composites Containing a Viscous Interface, Mech. Mater., 12, 229-244 (1991). 

S. V. Nair and T.-J. Gwo, Role of Crack Wake Toughening on Elevated Temperature Crack Growth in a Fiber Reinforced Ceramic Composite, Journal of Engineering Materials and Technology, 115, 273-280 (1993). 

Testing of ceramic composites has been around since the earliest fabrication of these materials. For particulate- and whisker-reinforced composites, testing methods which are suitable for monolithic ceramics are generally used. These methods include three- and four-point flexure, uniaxial tension and compression, and many others. For fiber-reinforced ceramic composites, flexural testing was also used initially. However, as was recognized in the polymer composites area, flexural testing alone could not provide the type of... 

The strength of the fiber-matrix interface is one of the key parameters responsible for the stress-strain behavior and damage tolerance of ceramic composites. Two different types of tests are available to measure the fiber-matrix interfacial properties in fiber-reinforced ceramic composites. The first is based on an indentation technique to either push the individual fiber into or through the matrix. The second test method relies on pulling a single fiber out of a matrix. These methods have been compared59 to one another for a glass matrix material, and yield similar results. 

Carbon fiber reinforced ceramic composites also find some important applications. Carbon is an excellent high temperature material when used in an inert or nonoxidizing atmosphere. In carbon fiber reinforced ceramics, the matrix may be carbon or some other glass or ceramic. Unlike other nonoxide ceramics, carbon powder is nonsinterable. Thus, the carbon matrix is generally obtained from pitch or phenolic resins. Heat treatment decomposes the pitch or phenolic to carbon. Many pores are formed during this conversion from a hydrocarbon to carbon. Thus, a dense and strong pore-free carbon/carbon composite is not easy to fabricate. 

L T Zhang, L F Cheng, Y D Xu and D X Li, investigation on interfacial zone in continuous fiber-reinforced ceramic composites, pp. 170-175, 2005, with permission from Xibei Youse Jinshu Yanjiuyuan. 

Figure 5.18 is reprinted from Ceramic Engineering and Science Proceedings, Vol. 5, A J Caputo and W J Lackey, Fabrication of fiber-reinforced ceramic composites by chemical vapor infiltration, pp. 654-667,1984, with permission from Wiley. 

W.J. Lackey, T. L. Starr, in Fiber Reinforced Ceramics Fabrication of Fiber-Reinforced Ceramic Composites by Chemical Vapor Infiltration Processing, Structure and Properties, pp. 397-450 (Ed. K.S. Mazdiyasni), Noyes Publications, Park Ridge NJ, 1990. 

Mazdiyasni, K. (ed.), Fiber-Reinforced Ceramic Composites Materials, Processing and Technology, Noyes Publications, Park Ridge, NJ, 1990. 

CFCC continuous fiber-reinforced ceramic composite... 

This section centers on fiber coatings for non-oxide eomposites in which either the fiber or the matrix is a non-oxide ceramic. Although oxide fiber-reinforced composites have been studied, most of the research available in the literature has focused on SiC fiber-reinforced composites. For example, mullite (3Al203-2Si02) fiber-reinforced SiC matrix composites have been fabricated by CVI (chemical vapor infiltration). However, SiC fiber-reinforced SiC matrix (SiC/SiC) composites are superior for the following reasons (1) mullite fiber-reinforced composites do not improve resistance to oxidation, one of the major factors limiting the use of non-oxide composites and (2) SiC fibers have mechanical properties superior to those of mullite fibers. This section will be concerned primarily with SiC fiber-reinforced ceramic composites, which offer the best oxidation resistance of any non-oxide fiber at high temperatures (particularly above 1,100°C [2012°F]). 

FIGURE 6-8 A schematic representation of matrix cracking on exposure to stresses above the matrix eraeking strength in continuous fiber-reinforced ceramic composites. Source Luthra, 1997b. 

Langenheim JH (2003) Plant resins. Timber Press, Portland Marin GB (2007) Advances in chemical engineering, vol 32. Elsevier, Amsterdam Matyjaszewski K, Davis TP (2002) Handbook of radical polymerization. Wiley, New York Mazdiyasni KS (ed) (1990) Fiber reinforced ceramic composites materials, processing and technology. Noyes, Parkridge, NJ... 

P. Fenici, H. W. Scholtz, Advanced low activation materials fiber reinforced ceramic composites. Journal of... 

M. Krupka and A. Kienzle, Fiber Reinforced Ceramic Composites for Brake Discs, SAE Technical Paper Series 2000-01-2761 (2000). 

A.J. Caputo, W.J. Lackey, and D.P. Stinton, Development of a New, Faster Proeess for the Fabrication of Ceramic Fiber-Reinforced Ceramic Composites by Chemical Vapor Infiltration, Ceram. Eng. Sci. Proc. 6 [7-8] 694-706 (1985). 

G.H. Schiroky, A.S. Fareed, B. Sonuparlak, C.T. Lee, and B. Sorenson, Fabrication and Properties of Fiber-Reinforced Ceramic Composites Made by Directed Metal Oxidation, pp. 151-163, in Flight-Vehicle Materials, Structures and Dynamics - Assessment and Future Directions, Vol. 3, S.R. Levine Jr, ed, ASME, New York, 1992. 

---