Brazing graphite to graphite

Patent · Tue Mar 30 04:00:00 EST 1976

OSTI ID:7185428

Peterson, G R

Graphite is joined to graphite by employing both fine molybdenum powder as the brazing material and an annealing step that together produce a virtually metal-free joint exhibiting properties similar to those found in the parent graphite. Molybdenum powder is placed between the faying surfaces of two graphite parts and melted to form molybdenum carbide. The joint area is thereafter subjected to an annealing operation which diffuses the carbide away from the joint and into the graphite parts. Graphite dissolved by the dispersed molybdenum carbide precipitates into the joint area, replacing the molybdenum carbide to provide a joint of graphite.

• Assignee: Energy Research and Development Administration
• Patent Number(s): US 3946932
• OSTI ID: 7185428
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
ANNEALING
BRAZING
CARBIDES
CARBON
CARBON COMPOUNDS
DIFFUSION
ELEMENTS
FABRICATION
GRAPHITE
HEAT TREATMENTS
JOINING
METALS
MOLYBDENUM
MOLYBDENUM CARBIDES
MOLYBDENUM COMPOUNDS
NONMETALS
POWDERS
REFRACTORY METALS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WELDING