Carbon fibers grown from methane gas, on iron seeded substrates at 1370K, and subsequently annealed temperatures between 2800K and 3475K are investigated by measuring the electrical resistivity as a function of temperature from 4K to 2100K. 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 1000K, suggesting the usefulness of these fibers as high temperature materials in space applications.
|Original language||English (US)|
|Number of pages||21|
|Journal||Applied physics communications|
|State||Published - Sep 1 1987|
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