Coating processes – Coating by vapor – gas – or smoke – Carbon or carbide coating
Patent
1994-06-13
1995-06-13
King, Roy V.
Coating processes
Coating by vapor, gas, or smoke
Carbon or carbide coating
4272555, 427122, 4272551, 428408, 423446, C23C 1626
Patent
active
054240964
ABSTRACT:
Diamond is produced by chemical vapor deposition on a substrate by hot filament activation of a hydrogen-hydrocarbon gas mixture. An edge of the substrate faces the filament at a distance; therefrom up to about 1 mm. and preferably about 0.3-0.7 mm., and the substrate is moved relative to the filament to maintain this spacing as diamond forms thereon. Diamond formation proceeds at an improved rate, and in single crystal configuration under certain conditions.
REFERENCES:
patent: 4816286 (1989-03-01), Hirose
patent: 4953499 (1990-09-01), Anthony et al.
Aikyo et al, "Diamond Synthesis Suppressing the Thermal Decomposition of Methane in a Hot-Filament CVD", Jpn. J. Appl. Phys. 28(9) Sep. 1989, pp. L1631-L1633.
Anthony Thomas R.
Ettinger Robert H.
Fleischer James F.
General Electric Company
King Roy V.
Pittman William H.
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