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): US 5336520; A
• Application Number: PPN: US 7-539270
• OSTI ID: 7103497
• Resource Relation: Patent File Date: 18 Jun 1990
• Country of Publication: United States
• Language: English

Related Subjects

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