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Quantifying Amorphous Content of Commercially Available Silicon Carbide Fibers

Wolford, Ian Mark
http://rave.ohiolink.edu/etdc/view?acc_num=wright1472054006

Abstract Details

2016, Master of Science in Materials Science and Engineering (MSMSE), Wright State University, Materials Science and Engineering.
SiC/SiC ceramic matrix composites (CMCs) with potential applications at =2700°F (1482°C) are of significant interest to the Air Force. The high temperature performance of SiC fibers used within these composites is greatly affected by the presence of amorphous SiOC and free carbon in the fibers. Therefore quantification of this non SiC material in commercially available SiC fibers is extremely important. In this work Hi Nicalon, Hi-Nicalon Type-S, Tyranno-SA3, Cef-NITE, and Sylramic SiC fibers were studied. Changes in mass, grain size, and amorphous content were measured as a function of processing temperature and time. The amorphous material in each fiber was quantified using the Spike-In method in conjunction with Rietveld refinement. Trends in amorphous content were observed, as well as trends in grain size and crystallized fraction. Transmission electron microscopy (TEM) was used to confirm changes in fiber microstructure.
H. Daniel Young, Ph.D. (Advisor)
Hong Huang, Ph.D. (Committee Member)
Michael Cinibulk, Ph.D. (Committee Member)
Robert E. W. Fyffe, Ph.D. (Other)
110 p.
Aerospace Materials; Materials Science
silicon carbide; SiC; CMC; ceramic fiber; SiC fiber; ceramic composite; SiOC; amorphous

Recommended Citations

Citations

  • Wolford, I. M. (2016). Quantifying Amorphous Content of Commercially Available Silicon Carbide Fibers [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1472054006

    APA Style (7th edition)

  • Wolford, Ian. Quantifying Amorphous Content of Commercially Available Silicon Carbide Fibers. 2016. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1472054006.

    MLA Style (8th edition)

  • Wolford, Ian. "Quantifying Amorphous Content of Commercially Available Silicon Carbide Fibers." Master's thesis, Wright State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1472054006

    Chicago Manual of Style (17th edition)

wright1472054006
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© 2016, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.