Interrelationship of thermal oxidation and the structure of graphite powders

Effect of the structure of the phosphorus-containing anion in the phosphate binder on the inhibition of thermal oxidation of graphite powders

“…A comparison of the previously published data [7] and the data presented in Table 1 indicates that a correlation exists between the degree of perfection of the crystalline structure of graphite and the concentration of PMC in them: the greater the degree of perfection of the structure of graphite, the smaller is the concentration of the paramagnetic centers.…”

“…In order to understand the nature of PMC in the experimental GT-I grade graphite powder (having the most perfect crystalline structure [7]), we treated it with bromine vapors according to the previously described procedure [ii]. The graphite powder was placed in one knee (leg) of a U-shaped test tube and liquid bromine was introduced into the other knee of the tube maintaining a weight ratio of 1:5.…”

“…As was described earlier [7], the carboxyl groups were identified using the methods of polarography and infrared spectroscopy.…”