Brazing graphite to graphite

Details Brazing graphite to graphite Brazing graphite to graphite

1968-04-25

1976-03-30

Padgett, Benjamin R.

Metal fusion bonding

Process

Bonding nonmetals with metallic filler

228234, 228263, B23K 3102

Patent

active

039469328

ABSTRACT:
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 virtually graphite.

REFERENCES:
patent: 2095807 (1937-10-01), Gier, Jr.
patent: 2979813 (1961-04-01), Steinberg
patent: 2979814 (1961-04-01), Steinberg

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