polygranular graphite

A @G02687@ composed of grains which can be clearly distinguished by means of optical microscopy.
From the viewpoint of @C01433@, a polygranular @G02684@ is always a @P04723@ but not vice versa. Most industrial @G02684@ materials are polygranular. Monogranular materials consist mostly of @N04193@, such materials are called monolithic or @A00188@.
PAC, 1995, 67, 473. (Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)) on page 501 [Terms] [Paper]