the National Natural Science Foundation of China (Nos. 50702045, 50871078, 51172182);the Program for New Century Excellent Talents in University (No. NCET-08-0460);Basic Research Foundation of NWPU (No. JC20100227)
Cathode erosion of graphite and Cu/C was studied in direct current arcs, which were ignited between two electrodes comprised of two kinds of carbon materials and a tungsten anode in air. The arced zones on the cathode...