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Electrical resistivity (4K to 2100K) of annealed vapor growth carbon fibersCarbon fibers have been grown from methane gas, on iron seeded substrates at 1370 K, and subsequently annealed to a series of temperatures between 2800 K and 3475 K. The subsequent measurement of the electrical resistivity are reported as a function of temperature from 4 K to 2100 K. The two band model for the resistivity of graphite is well fit to the data, and results in physically reasonable parameters of the fits. The resistivity vs temperature results for two boron doped fibers are reported as well. The product of the resistivity times density for these fibers is lower than that product for any refractory metal, for temperatures above about 1000 K, suggesting the usefulness of these fibers as high temperature materials in space applications.
Document ID
19880029987
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ahmed, Akhter U.
(Nebraska Univ. Lincoln, NE, United States)
Rost, Martin C.
(Nebraska Univ. Lincoln, NE, United States)
Meyer, Duane
(Nebraska Univ. Lincoln, NE, United States)
Dillon, Rodney O.
(Nebraska Univ. Lincoln, NE, United States)
Woollam, John A.
(Nebraska, University Lincoln, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Publication Information
Publication: Applied Physics Communications
Volume: 7
Issue: 3 19
ISSN: 0277-9374
Subject Category
Nonmetallic Materials
Accession Number
88A17214
Funding Number(s)
CONTRACT_GRANT: NAG3-95
Distribution Limits
Public
Copyright
Other

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