Carbon electrical resistivity variation with

A variation of this type of furnace, with slotted graphite tube, has been described by W. J. Kroll [6] and has given satisfactory performance in various tests. Graphite is more resistant to oxidation than carbon. The disadvantage of its lower electrical resistance... 

A further problem relates to the variation of the electrical resistance of the carbon rod or tube with use. Thus, with a standardized atomization programme, the temperatures achieved will differ somewhat as the carbon ages, although the time and voltage remain the same, and this will affect the atomization rate. 

Electrical conductivity Carbon fibers Carbon powders Ductility, cost Tensile strength, ductility, cost Ductility, cost Tensile strength, ductility, cost Resistivities of 1 to 100,000 ohm-cm can be achieved and are proportional to cost. Various carbon fibers and powders are available with wide variations in conductivity yields in composites. 

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