Reduced puffing needle coke from coal tar
A reduced puffing needle coke is formed, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.
GrafTech International Holdings Inc.
C C C C
C10B C10C C10C C10B
inventional inventional inventional inventional
Ching-Feng Douglas J. Aaron Irwin C. Richard L.
Chang Miller Tomasek Lewis Shao