Advertisement

Journal of Materials Science

, Volume 30, Issue 21, pp 5502–5507 | Cite as

Measurement of elastic and anelastic properties of reaction-formed silicon carbide-based materials

  • A. Wolfenden
  • P. J. Rynn
  • M. Singh
Papers

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.

Keywords

Polymer Silicon Microstructure Activation Energy Elastic Modulus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    E. Fitzer and R. Gadow, Amer. Ceram. Soc. Bull. 65 (1986) 325.Google Scholar
  2. 2.
    P. J. Lamicq, G. A. Bernhart, M. M. Dauchier and J. G. Mace, ibid. 65 (1986) 336.Google Scholar
  3. 3.
    M. E. Washburn and W. S. Coblenz, ibid. 67 (1988) 356.Google Scholar
  4. 4.
    D. R. Behrendt and M. Singh, J. Mater. Syn. Process. 2 (1994) 133.Google Scholar
  5. 5.
    M. Singh, R. Pawlik, J. A. Salem and D. R. Behrendt “Advances in ceramic matrix composites” (The American Ceramics Society, Westerville, OH, 1993). 349.Google Scholar
  6. 6.
    M. Singh and D. R. Behrendt, Mater. Sci. Engng. A194 (1995) 193.CrossRefGoogle Scholar
  7. 7.
    Idem. NASA Technical Memorandum 105860 (1992).Google Scholar
  8. 8.
    J. Marx, Rev. Sci. Instrum. 22 (1951) 503.CrossRefGoogle Scholar
  9. 9.
    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.Google Scholar
  10. 10.
    J. F. Shackelford, “Introduction to materials science for engineers” (Macmillan, New York 1985) p. 324.Google Scholar
  11. 11.
    F. E. Bacon, “Properties of silicon: Metals handbook”, 8th Ed, Vol. 1 (ASM Int., Metals Park, OH, 1966).Google Scholar
  12. 12.
    J. Z. Briggs, “Properties of molybdenum: Metals handbook” 8th Ed, Vol. 1 (ASM Int., Metals Park, OH, 1966).Google Scholar
  13. 13.
    L. H. Van Vlack, “Elements of materials science and Engineering”, 4th Ed, (Addison-Wesley, Reading, MA, 1980).Google Scholar
  14. 14.
    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.Google Scholar
  15. 15.
    M. Fukuhara and Y. Abe, J. Mater. Sci. Lett. 12 (1993) 681.CrossRefGoogle Scholar
  16. 16.
    J. Friedel, “Dislocations” (Pergamon Press, New York, 1964) Appendix B, p. 454.Google Scholar
  17. 17.
    J. D. Hong and R. F. Davis, J. Amer. Ceram. Soc. 63 (1980) 546.CrossRefGoogle Scholar
  18. 18.
    K. Nishiyama, M. Yamanaka, M. Omori and S. Umekawa, J. Mater. Sci. Lett. 9 (1990) 526.CrossRefGoogle Scholar
  19. 19.
    R. Ruh, A. Zangvil and J. Barlowe, Amer. Ceram. Soc. Bull. 64 (1985) 1368.Google Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • A. Wolfenden
    • 1
  • P. J. Rynn
    • 1
  • M. Singh
    • 2
  1. 1.Advanced Materials Laboratory, Mechanical Engineering DepartmentTexas A&M UniversityCollege StationUSA
  2. 2.NASA Lewis Research CenterClevelandUSA

Personalised recommendations