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Effect of heat-treatment temperature of vapor-grown graphite fibers. I - Properties of their bromine intercalation compoundsVapor-grown graphite fibers were heat treated at 2000, 2200, 2400, 2600, 2800, and 3000 C, brominated at room temperature for two days, and then characterized by X-ray diffraction analysis, differential scanning calorimetry, and resistivity measurements. Fibers greater than 13 microns in diameter had low resistivities (50 microohms or less) irrespective of the heat treatment temperature. An analysis of the results obtained suggests that resistivities below 6 microohms cannot be achieved through a further reduction in defect level unless the amount of bromine is increased.
Document ID
19900029224
Document Type
Reprint (Version printed in journal)
Authors
Gaier, James R. (NASA Lewis Research Center Cleveland, OH, United States)
Hambourger, Paul D. (NASA Lewis Research Center Cleveland, OH, United States)
Slabe, Melissa E. (Cleveland State University OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Publication Information
Publication: Synthetic Metals
Volume: 31
ISSN: 0379-6779
Subject Category
NONMETALLIC MATERIALS
Funding Number(s)
CONTRACT_GRANT: NCC3-19
Distribution Limits
Public
Copyright
Other