SpringerLink
Log in

Interfacial Characterizations of Fiber-Reinforced Sic Composites Exhibiting Brittle and Toughened Fracture Behavior

  • Articles
  • Published:
MRS Online Proceedings Library Aims and scope

Abstract

A process has been developed for the fabrication of a ceramic composite of SiC fibers in a chemical vapor infiltrated (CVI) SiC matrix. Early specimens produced by this technique exhibited nonuniform fracture toughness behavior; regions of brittle fracture with no fiber pullout were interspersed with regions of good toughness where fiber pullout predominated. Microscopic and spectroscopic analyses of fiber surfaces revealed that this behavior may have been related to a thin, discontinuous layer of predominantly silica which, when present, prevented tight bonding of fibers and CVI matrix. Consequently, efforts to control interfacial bond strengths and enhance fracture toughness via fiber pretreatment with CVI overcoatings have had mixed success depending upon the overcoating specie. Chemical and microstructural characterizations by analytical electron microscopy of these composites are presented and correlated with composite mechanical property data.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Subscribe and save

Springer+ Basic
EUR 32.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or Ebook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price includes VAT (Germany)

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. A.J. Caputo, W.J. Lackey, “Fabrication of Fiber-Reinforced Ceramic Composites by Chemical Vapor Infiltration,” ORNL/TM-9235, Oak Ridge National Lab, Oak Ridge, TN, October 1984.

    Book  Google Scholar 

  2. A.J. Caputo, W.J. Lackey, “FAbrication of Fiber-Reinforced Ceramic Composites by Chemical Vapor Infiltration,” Ceram. Eng. & Sci. Proc., 5 [7–8] 654–67 (1984).

    Article  CAS  Google Scholar 

  3. A.J. Caputo, W. J. Lackey, D.P. Stinton, “Development of a New, Faster Process for the Fabrication of Ceramic Fiber-Reinforced Ceramic Composites by Chemical Vapor Infiltration,” ibid., 6 [7–8] 694–706 (1985).

    Article  CAS  Google Scholar 

  4. T. Mah et al., “Thermal Stability of SiC Fibers,” J. Mater. Sci. 19, 1191–1201 (1984).

    Article  CAS  Google Scholar 

  5. L.C. Sawyer et al., Ceram. Eng. & Sci. Proc., 6 [7–8] 567–75 (1985).

    Article  CAS  Google Scholar 

  6. T.J. Clark et al., Ceram. Eng. & Sci. Proc., 6 [7–8] 576–88 (1985).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Oak Ridge National Lab., Oak Ridge, TN, 37831, USA

    M. H. Rawlins, T. A. Nolan, D. P. Stinton & R. A. Lowden

Authors
  1. M. H. Rawlins
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. T. A. Nolan
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. D. P. Stinton
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. R. A. Lowden
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Rawlins, M.H., Nolan, T.A., Stinton, D.P. et al. Interfacial Characterizations of Fiber-Reinforced Sic Composites Exhibiting Brittle and Toughened Fracture Behavior. MRS Online Proceedings Library 78, 223–230 (1986). https://doi.org/10.1557/PROC-78-223

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1557/PROC-78-223

Search

Navigation