Abstract
The dynamic Young's modulus and the strain amplitude dependence of damping, at room temperature as well as at elevated temperatures, were determined for reaction-formed SiC (RFSC) ceramics, and the results are compared with those for other SiC materials. The method used was the piezoelectric ultrasonic composite oscillator technique (PUCOT). Five specimens were studied: NC 203 (a commercially produced SiC by Norton, Co.); RFSC No. 1 and RFSC No. 2 (each containing residual Si); RFSC No. 3 and RFSC No. 4 (both containing residual Si and MoSi2). Metallographie observations showed that the microstructure of the RFSC is essentially isotropic with a uniform distribution of phases. The “rule of mixtures” calculations cannot be used to predict accurately the elastic modulus of the RFSC, but they can be used to predict the density to within 5%. It was determined that for the RFSC, the dynamic Young's modulus decreases as temperature increases, in a manner similar to that for other SiC materials. It was also found that the damping of the RFSC is generally independent of strain amplitude and is weakly affected by temperature. The activation energy was determined for the change in damping with change in temperature of RFSC No. 2 and RFSC No. 3.
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References
E. Fitzer and R. Gadow, Amer. Ceram. Soc. Bull. 65 (1986) 325.
P. J. Lamicq, G. A. Bernhart, M. M. Dauchier and J. G. Mace, ibid. 65 (1986) 336.
M. E. Washburn and W. S. Coblenz, ibid. 67 (1988) 356.
D. R. Behrendt and M. Singh, J. Mater. Syn. Process. 2 (1994) 133.
M. Singh, R. Pawlik, J. A. Salem and D. R. Behrendt “Advances in ceramic matrix composites” (The American Ceramics Society, Westerville, OH, 1993). 349.
M. Singh and D. R. Behrendt, Mater. Sci. Engng. A194 (1995) 193.
Idem. NASA Technical Memorandum 105860 (1992).
J. Marx, Rev. Sci. Instrum. 22 (1951) 503.
W. H. Robinson and A. Edgar, “IEEE, Transactions on sonics and ultrasonics”, Su-q21, 2 (American Institute of Electrical and Electronic Engineers 1974) p. 98.
J. F. Shackelford, “Introduction to materials science for engineers” (Macmillan, New York 1985) p. 324.
F. E. Bacon, “Properties of silicon: Metals handbook”, 8th Ed, Vol. 1 (ASM Int., Metals Park, OH, 1966).
J. Z. Briggs, “Properties of molybdenum: Metals handbook” 8th Ed, Vol. 1 (ASM Int., Metals Park, OH, 1966).
L. H. Van Vlack, “Elements of materials science and Engineering”, 4th Ed, (Addison-Wesley, Reading, MA, 1980).
P. T. Jaminet, A. Wolfenden and V. K. Kinra in “Damping and dynamic elastic modulus of ceramics and ceramic-matrix composites at elevated temperatures, M3D: Mechanics and mechanisms of material damping” (ASTM, STP 1169, Philadelphia, PA, 1992) p. 431.
M. Fukuhara and Y. Abe, J. Mater. Sci. Lett. 12 (1993) 681.
J. Friedel, “Dislocations” (Pergamon Press, New York, 1964) Appendix B, p. 454.
J. D. Hong and R. F. Davis, J. Amer. Ceram. Soc. 63 (1980) 546.
K. Nishiyama, M. Yamanaka, M. Omori and S. Umekawa, J. Mater. Sci. Lett. 9 (1990) 526.
R. Ruh, A. Zangvil and J. Barlowe, Amer. Ceram. Soc. Bull. 64 (1985) 1368.
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Wolfenden, A., Rynn, P.J. & Singh, M. Measurement of elastic and anelastic properties of reaction-formed silicon carbide-based materials. JOURNAL OF MATERIALS SCIENCE 30, 5502–5507 (1995). https://doi.org/10.1007/BF00351565
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DOI: https://doi.org/10.1007/BF00351565