Coating processes – Spray coating utilizing flame or plasma heat – Inorganic carbon containing coating – not as steel
Patent
1994-12-21
1997-06-03
King, Roy V.
Coating processes
Spray coating utilizing flame or plasma heat
Inorganic carbon containing coating, not as steel
427446, 427122, B05D 110
Patent
active
056352549
ABSTRACT:
A method and composition for the deposition of a thick layer (10) of diamond or diamond-like material. The method includes high temperature processing wherein a selected composition (12) including at least glassy carbon is heated in a direct current plasma arc device to a selected temperature above the softening point, in an inert atmosphere, and is propelled to quickly quenched on a selected substrate (20). The softened or molten composition (18) crystallizes on the substrate (20) to form a thick deposition layer (10) comprising at least a diamond or diamond-like material. The selected composition (12) includes at least glassy carbon as a primary constituent (14) and may include at least one secondary constituent (16). Preferably, the secondary constituents (16) are selected from the group consisting of at least diamond powder, boron carbide (B.sub.4 C) powder and mixtures thereof.
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Holcombe Cressie E.
Price R. Eugene
Seals Roland D.
Adams Harold W.
Ericson Ivan L.
King Roy V.
Martin Marietta Energy Systems Inc.
Skinner Martin J.
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