Studies on the Graphite Electrode, 1

The degree of graphitization of artificial graphites was estimated by the anodic swelling in electrolysis of sulphuric acid and Brodie's wet-oxidation. Moreover, the mechanism of the corrosion of graphite was discussed.The results obtained are as follows;1. Swelling test:Swelled graphite by anodic treatment with sulphuric acid evolved oxygen when it was digested in alkaline solution, and the volume of oxygen suggested the degree of graphitization.2. Wet-oxidation test:Generally, lower graphitized carbon (amorphous carbon) consumed more than higer one (graphite).In artificial graphite, however, contrary to our expectations, higher graphitized graphite consumed more than lower one.The above facts availed for the estimation of the degree of graphitization.