Spark plasma sintering methods for fabricating dense graphite
AssigneesBattelle Energy Alliance, LLC, Triad National Security, LLC
InventorsHoward T. Hartman, Benjamin D. Coryell, Jeffery A. Aguiar, Colleen V. Shelton-Davis, Erik P. Luther
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Abstract
Various embodiments of the disclosure provide methods using spark plasma sintering (SPS) at moderate temperatures and moderate pressures to fabricate high-density graphite material. The moderate temperatures may be temperatures not exceeding about 1200° C. The moderate pressures may be pressures not exceeding about 300 MPa. The high density exhibited by the resulting, sintered, high-density graphite material may be greater than about 1.75 g/cm3 (e.g., greater than about 2.0 g/cm3).
Claims18
A method for fabricating a high-density graphite material, the method comprising subject a raw material comprising graphite to an electrical current, a temperature not exceeding 1200° C., and a pressure not exceeding about 300 MPa to sinter the raw material into a high-density graphite material having a carbon content of greater than about 95 atomic percent and exhibiting a density of greater than 2.0 g/cm3.
Dependencies are inferred from the claim text.