Research and Development on Advanced Graphite Materials. Supplement to Volume Vii. High-Density Recrystallized Graphite by Hot Forming

摘要

This report describes the development and fabrication techniques utilized in the scale-up of grades ZTE and ZTF graphite to 30-inch diameter sizes. Grades ZTE and ZTF graphite which are normally characterized by a bulk density range of 1.92 to 1.97 g/cc and 1.97 to 2.02 g/cc, respectively, are manufactured by hot working grade RVA graphite which is characterized by a bulk density of 1.84 g/cc under pressures as high as 3500 lbs./sq. in. and temperatures up to 3000C. The physical properties of a 30-inch diameter ZTE graphite billet are tabulated along with the properties of RVA graphite. (Author)