https://doi.org/10.1351/goldbook.P04730
A carbon material composed of grains, which can be clearly distinguished by means of optical microscopy.
Note:
Industrial carbon materials (such as electrodes) are mostly polygranular, but special grades are agranular materials, such as glass-like carbon, carbon fibres or pyrolytic carbon. Such materials are covered by the term agranular carbon.
Industrial carbon materials (such as electrodes) are mostly polygranular, but special grades are agranular materials, such as glass-like carbon, carbon fibres or pyrolytic carbon. Such materials are covered by the term agranular carbon.