High density-high purity graphite prepared by hot isostatic pressing in refractory metal containers

Patent · Tue Aug 09 00:00:00 EDT 1994

OSTI ID:7103497

Hoenig, C L

Porous graphite in solid form is hot isostatically pressed in a refractory metal container to produce a solid graphite monolith with a bulk density greater than or equal to 2.10 g/cc. The refractory metal container is formed of tantalum, niobium, tungsten, molybdenum or alloys thereof in the form of a canister or alternatively plasma sprayed, chemically vapor deposited, or coated by some other suitable means onto graphite. Hot isostatic pressing at 2,200 C and 30 KSI (206.8 MPa) argon pressure for two hours produces a bulk density of 2.10 g/cc. Complex shapes can be made. 1 fig.

• DOE Contract Number: W-7405-ENG-48
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): A; US 5336520
• Application Number: PPN: US 7-539270
• OSTI ID: 7103497
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
CARBON
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
DEPOSITION
ELEMENTAL MINERALS
ELEMENTS
FABRICATION
GRAPHITE
HOT PRESSING
MATERIALS
MATERIALS WORKING
MINERALS
NONMETALS
PLASMA ARC SPRAYING
POROUS MATERIALS
PRESSING
SPRAY COATING
SURFACE COATING