| 摘要 |
PURPOSE:To obtain a light-weight carbon material consisting of a glassy carbon each specifying pore size and apparent density in a spherical crystal and having excellent surface precision, heat resistance and corrosion resistance and small coefficient of thermal expansion and high strength. CONSTITUTION:A thermosetting resin (e.g., phenolic resin) providing a glassy carbon after carbonization burning is molded, dried and then heated to 1000-1900 deg.C under atmosphere of an inert gas such as Ni or Ar gas to carry out preliminary baking. The material after preliminary baking is heated to 2050-2600 deg.C temperature range and pressurized under isotropic pressure of >=1000 atom to subject the material to densifying treatment. The pressure treatment can be carried out by an ultrahigh temperature hot hydrostatic pressure device. As a result, the resultant carbon material consists of glassy carbon having <=30 A pore size in spherical crystal and >=1.80 apparent density. |
