Chemically modified carbonaceous materials made by the defluorin

Details Chemically modified carbonaceous materials made by the defluorin Chemically modified carbonaceous materials made by the defluorin

1996-12-18

1998-12-01

Beck, Shrive P.

Coating processes

Coating by vapor, gas, or smoke

Carbon or carbide coating

427250, 4272554, 427228, 423460, 423448, 423414, 423439, C23C 1606

Patent

active

058435280

ABSTRACT:
A method of making chemically modified carbon-based composite materials for engineering purposes from a precursor containing graphite fluoride by using halocarbons or elemental sulfur as chemical agents that diffuse into the lamellar crystal structure of the graphite fluoride and permit defluoridation at a controlled rate upon heating, to produce a graphite fluoride-free intermediate carbon material and, upon further heating to form a chemically modified carbon that is further heated in the presence of a specified one of several chemical elements to form a composite including a coating of the specified element.

REFERENCES:
patent: 4116880 (1978-09-01), Olah

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