Conductivity of graphite

The low cost, light weight, and exceUent electrical conductivity of graphite anodes have made this impressed current protection system valuable for cathodic protection of pipelines, storage vessels, process equipment, and also for weU casings both on- and offshore. 

The uTadiation-induced thermal conductivity degradation of graphites and CFCs will cause serious problems in fusion system PFCs. As with ceramics, the thermal conductivity of graphite is dominated by phonon transport and is therefore greatly... 

The thermal conductivity of graphite-based materials can be written as a summation of the thermal resistance due to scattering ... 

Fig. 15. Weight loss as a function of mean thermal conductivity of graphite.

Because direct calculation of thermal conductivity is difficulty 1], experimental measurements on composites with nanotubes aligned in the matrix could be a first step for addressing the thermal conductivity of carbon nanotubes. High on-axis thermal conductivities for CCVD high-temperature treated carbon fibers have been obtained, but have not reached the in-plane thermal conductivity of graphite (ref. [3], Fig. 5.11, p. 115). We expect that the radial thermal conductivity in MWNTs will be very low, perhaps even lower than the c-axis thermal conductivity of graphite. 

The HF-SbFs system is known to be a superacid H34). The possible relevance of this to the intercalation process was pointed out by Vogel V12), who first reported on the extremely high electrical conductivity of graphite-SbFj measured normal to the crystallographic c-axis. The measured conductivity was approximately 40 times that of pristine graphite, and 50% greater than that of pure copper. Other workers... 

The electrical conductivity of graphite parallel to its planes is different from that perpendicular to them. Parallel to the planes, the conductivity decreases as the temperature is raised but perpendicular to them, it rises. In what sense is graphite a metallic conductor or a semiconductor ... 

The non-localization of the tt electrons, as described by the molecular orbital treatment, explains the high electrical conductivity of graphite. The various layers of graphite are held together by... 

---