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Homogeneity of pristine and bromine intercalated graphite fibersWide variations in the resistivity of intercalated graphite fibers and to use these materials for electrical applications, their bulk properties must be established. The homogeneity of the diameter, the resistivity, and the mass density of 50 graphite fibers, before and after bromine intercalation was measured. Upon intercalation the diameter was found to expand by about 5%, the resistivity to decrease by a factor of five, and the density to increase by about 6%. Each individual fiber was found to have uniform diameter and resistivity over macroscopic regions for lengths as long as 7 cm. The ratio of pristine to intercalated resistivity increases as the pristine fiber diameter increases at a rate of 0.16 micron, but decreases with the increasing ratio of intercalated diameter to pristine diameter at a rate of 0.08.
Document ID
19850017210
Document Type
Conference Paper
Authors
Gaier, J. R. (NASA Lewis Research Center Cleveland, OH, United States)
Marino, D. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1985
Subject Category
NONMETALLIC MATERIALS
Report/Patent Number
E-2560
NASA-TM-87016
NAS 1.15:87016
Funding Number(s)
PROJECT: RTOP 506-55-72
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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