| 摘要 |
PURPOSE:To reduce electric resistance, increase dimensional accuracy and improve corrosion resistance in addition by arranging a coating of an organic macro-molecular thermal cracking product on the surface of a carbon compact. CONSTITUTION:Three kinds of carbon materials with porosity of 55%, 45% and 35% are cut out into suitable sizes to be used as carbon compacts. Vinyl chroride resin is used as an organic macro-molecule. A pitch-like precursor PC is obtained by heating and baking the vinyl chroride at about 390 deg.C in argon gas for approximately 90 minutes. Then, the PC is resolved into trichlene with concentration of 500g/l, and the carbon compacts are immersed in the solution and subjected to ultrasonic impregnation to apply the PC thereon. By this method, carbon electrodes with small electric resistance, high dimensional accuracy and, in addition, good corrosion resistance are obtained. |
