carbon electrode

Also contains definition of: graphite electrode
https://doi.org/10.1351/goldbook.C00829
An electrode for an electrical application. In its green state it comprises
granular carbon
material bound with
pitch
. The
granular carbon
material may be either
needle coke
, fine-grained or
isotropic
coke
or reclaimed
graphite
powder. Electrodes for use in steel production can only be manufactured from
needle coke
, and the green electrodes are fired at temperatures above around 2800 K to produce highly
graphite
electrodes. The other
granular carbon
materials may be used for aluminium electrodes where the duty is not so severe, and the green electrodes are generally fired to lower temperatures.
Note:
In both cases it is essential that the granular carbons and the
pitch
binders used in the production of the green electrodes have a low sulfur content as the release of sulfur during the high-temperature firing can lead to the production of significant
porosity
.
See also:
puffing
,
graphitic carbon
,
graphitization heat treatment
,
isotropic carbon
Source:
PAC, 1995, 67, 473. (Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)) on page 480 [Terms] [Paper]