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Title: Investigation of forced and isothermal chemical vapor infiltrated SiC/SiC ceramic matrix composites. Final report

Abstract

Mechanical properties of two different layups for each of the forced CVI (41 specimens) and isothermal CVI (36 specimens) materials were investigated in air at room temperature (RT), 1000C, and at room temperature after thermal shock (RT/TS) and exposure to oxidation (RT/OX). The FCVI specimens had a nominal interfacial coating thickness of 0.3 {mu}m of pyrolytic carbon, while CVI specimens had a coating thickness of 0.1 {mu}m. Effect of reinforcement and interfacial bond on mechanical properties of composite were investigated. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were employed to analyze the fiber-matrix interface and the toughening mechanisms in this ceramic composite system.

Authors:
; ;  [1]
+ Show Author Affiliations
  1. North Carolina Agricultural and Technical State Univ., Greensboro, NC (United States). Dept. of Mechanical Engineering
Publication Date:
Research Org.:
North Carolina Agricultural and Technical State Univ., Greensboro, NC (United States). Dept. of Mechanical Engineering; Oak Ridge National Lab., TN (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10110665
Report Number(s):
ORNL/SUB-88-SC423/01
ON: DE94004544
DOE Contract Number:
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Sep 1993
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPOSITE MATERIALS; MECHANICAL PROPERTIES; PROGRESS REPORT; REINFORCED MATERIALS; SILICON CARBIDES; FIBERS; 360603

Citation Formats

Sankar, J., Kelkar, A.D., and Vaidyanathan, R. Investigation of forced and isothermal chemical vapor infiltrated SiC/SiC ceramic matrix composites. Final report. United States: N. p., 1993. Web. doi:10.2172/10110665.
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Sankar, J., Kelkar, A.D., & Vaidyanathan, R. Investigation of forced and isothermal chemical vapor infiltrated SiC/SiC ceramic matrix composites. Final report. United States. doi:10.2172/10110665.
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Sankar, J., Kelkar, A.D., and Vaidyanathan, R. Wed . "Investigation of forced and isothermal chemical vapor infiltrated SiC/SiC ceramic matrix composites. Final report". United States. doi:10.2172/10110665. https://www.osti.gov/servlets/purl/10110665.
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@article{osti_10110665,
title = {Investigation of forced and isothermal chemical vapor infiltrated SiC/SiC ceramic matrix composites. Final report},
author = {Sankar, J. and Kelkar, A.D. and Vaidyanathan, R.},
abstractNote = {Mechanical properties of two different layups for each of the forced CVI (41 specimens) and isothermal CVI (36 specimens) materials were investigated in air at room temperature (RT), 1000C, and at room temperature after thermal shock (RT/TS) and exposure to oxidation (RT/OX). The FCVI specimens had a nominal interfacial coating thickness of 0.3 {mu}m of pyrolytic carbon, while CVI specimens had a coating thickness of 0.1 {mu}m. Effect of reinforcement and interfacial bond on mechanical properties of composite were investigated. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were employed to analyze the fiber-matrix interface and the toughening mechanisms in this ceramic composite system.},
doi = {10.2172/10110665},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Sep 01 00:00:00 EDT 1993},
month = {Wed Sep 01 00:00:00 EDT 1993}
}
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Technical Report:
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DOI:  10.2172/10110665
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