Evaluating the effect of oxygen content in BN interfacial coatings on the stability of SiC/BN/SiC composites

K. L. More, K. S. Ailey, R. A. Lowden, H. T. Lin

Research output: Contribution to journalConference articlepeer-review

34 Scopus citations

Abstract

Boron nitride was studied as a fiber-matrix interface coating for Nicalon/SiC composites. In this study, two types of composites were used: low-O BN and high-O BN in the as-processed state. Samples were exposed to oxygen at temperatures as high as 950°C for times up to 400 h. Following oxidation experiments, the BN coatings were examined by TEM to quantify the extent of any reaction that occurred at either the fiber/BN and BN/SiC matrix interfaces. By using different microscopy and spectroscopy techniques, changes in structure and chemistry of the fiber-matrix interface region were characterized and composite degradation mechanisms quantified.

Original languageEnglish
Pages (from-to)463-470
Number of pages8
JournalComposites - Part A: Applied Science and Manufacturing
Volume30
Issue number4
DOIs
StatePublished - Apr 1999
EventProceedings of the 1997 International Symposium on Ceramic Matrix Composites, A Special of SAMPE, JISSE-5 - Tokyo, JPN
Duration: Oct 28 1997Oct 30 1997

Funding

Research sponsored by the US Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, the Office of Transportation Technologies, as part of the High Temperature Materials Laboratory Fellowship program, and the Office of Industrial Technologies, Industrial Energy Efficiency Division, as part of the Continuous Fiber Ceramic Composites Program, both managed by Lockheed Martin Energy Research Corp. under contract number DE-AC05-96OR22464.

FundersFunder number
Lockheed Martin Energy Research Corp.DE-AC05-96OR22464
Office of Industrial Technologies
Office of Transportation Technologies
US Department of Energy
Office of Energy Efficiency and Renewable Energy

    Fingerprint

    Dive into the research topics of 'Evaluating the effect of oxygen content in BN interfacial coatings on the stability of SiC/BN/SiC composites'. Together they form a unique fingerprint.

    Cite this