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Hi-Nicalon fiber-reinforced celsian matrix composites: Influence of interface modification

Published online by Cambridge University Press:  31 January 2011

Narottam P. Bansal  and
Jeffrey I. Eldridge
Narottam P. Bansal*
Affiliation:
National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio 44135–3191
Jeffrey I. Eldridge
Affiliation:
National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio 44135–3191
*
a) Address correspondence to this author.
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Extract

Unidirectional celsian matrix composites having 42–45 vol% of uncoated or BN-SiC coated Hi-Nicalon fibers were tested in three-point bend at room temperature. The uncoated fiber-reinforced composites showed catastrophic failure with strength of 210 ± 35 MPa and a flat fracture surface. In contrast, composites reinforced with coated fibers exhibited graceful failure with extensive fiber pullout. Values of first matrix cracking stress and strain were 435 ± 35 MPa and 0.27 ± 0.01%, respectively, with ultimate strength as high as 960 MPa. The elastic Young modulus of the uncoated and coated fiber-reinforced composites were 184 ± 4 GPa and 165 ± 5 GPa, respectively. Fiber push-through tests and microscopic examination indicated no chemical reaction at the uncoated or coated fiber-matrix interface. The low strength of composite with uncoated fibers is due to degradation of the fiber strength from mechanical damage during processing. Because both the coated- and uncoated-fiber-reinforced composites exhibited weak interfaces, the beneficial effect of the BN-SiC dual layer is primarily the protection of fibers from mechanical damage during processing.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 6 , June 1998 , pp. 1530 - 1537
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

1.Prewo, K. M., Glasses and Glass-Ceramics, edited by Lewis, M. H. (Chapman and Hall, New York, 1989), pp. 336–368.CrossRefGoogle Scholar
2.Brennan, J. J., Fiber Reinforced Ceramic Composites, edited by Mazdiyasni, K. S. (Noyes, Park Ridge, NJ, 1990), pp. 222–259.Google Scholar
3.Bansal, N. P., Solid State Synthesis and Properties of Monoclinic Celsian, NASA TM 107355 (1996).Google Scholar
4.Bansal, N. P. and Drummond, C. H. III, J. Am. Ceram. Soc. 76 (5), 1321–1324 (1993).CrossRefGoogle Scholar
5.Bansal, N. P., Hyatt, M. J., and Drummond, C. H. III, Ceram. Eng. Sci. Proc. 12 (7–8), 1222–1234 (1991).Google Scholar
6.Bansal, N. P., Ceramic Fiber-Reinforced Glass-Ceramic Matrix Composite, U.S. Patent 5,214,004, May 25, 1993.Google Scholar
7.Bansal, N. P., Method of Producing a Ceramic Fiber-Reinforced Glass-Ceramic Matrix Composite, U.S. Patent, 5,281,559, January 25, 1994.Google Scholar
8.Bansal, N. P., Mater. Sci. Eng. A 220 (1–2), 129–139 (1996).CrossRefGoogle Scholar
9.Bansal, N. P., McCluskey, P., Linsey, G., Murphy, D., and Levan, G., Nicalon Fiber-Reinforced Celsian Glass-Ceramic Matrix Composites, Proceedings of Annual HITEMP Review, Cleveland, OH, October 23–25, 1995. NASA CP 10178, Vol. III, pp. 41–1 to 41–14 (1995).Google Scholar
10.Bansal, N. P., Processing and Properties of HPZ Fiber-Reinforced Celsian Glass-Ceramic Matrix Composites (unpublished).Google Scholar
11.Bansal, N. P. and Setlock, J. A., Processing of Small Diameter Fiber-Reinforced Celsian Composites, NASA TM 107356 (1996).Google Scholar
12.Takeda, M., Sakamoto, J., Imai, Y., Ichikawa, H., and Ishikawa, T., Ceram. Eng. Sci. Proc. 15 (4), 133–141 (1994).CrossRefGoogle Scholar
13.Takeda, M., Sakamoto, J., Saeki, S., Imai, Y., and Ichikawa, H., Ceram. Eng. Sci. Proc. 16 (4), 37–44 (1995).CrossRefGoogle Scholar
14.Eldridge, J. I., Desktop Fiber Push-Out Apparatus, NASA TM 105341 (1991).Google Scholar
15.Lara-Curzio, E., Ferber, M. K., and Lowden, R. A., Ceram. Eng. Sci. Proc. 15 (5), 989–1000 (1994).CrossRefGoogle Scholar
16.Lara-Curzio, E. and Ferber, M. K., J. Mater. Sci. 29, 6152–6158 (1995).CrossRefGoogle Scholar
17.Kerans, R. J. and Parthasarathy, T. A., J. Am. Ceram. Soc. 74 (7), 1586–1596 (1991).CrossRefGoogle Scholar
18.Koss, D. A., Kallas, M. N., and Hellmann, J. R., in Intermetallic Matrix Composites II, edited by Miracle, D. B., Anton, D. L., and Graves, J. A. (Mater. Res. Soc. Symp. Proc. 273, Pittsburgh, PA, 1992), pp. 303–313.Google Scholar
19.Eldridge, J. I., Bhatt, R. T., and Kiser, J. D., Ceram. Eng. Sci. Proc. 12 (7–8), 1152–1171 (1991).Google Scholar
20.Eldridge, J. I. and Ebihara, B. T., J. Mater. Res. 9, 1035–1042 (1994).CrossRefGoogle Scholar
21.Bansal, N. P. (unpublished research).Google Scholar
22.Tredway, W. K., Ceram. Eng. Sci. Proc. 17 (4), 291–298 (1996).Google Scholar
23.Prewo, K. M., J. Mater. Sci. 21 (10), 3590–3600 (1986).CrossRefGoogle Scholar