Superhard composite materials including compounds of carbon and

Details Superhard composite materials including compounds of carbon and Superhard composite materials including compounds of carbon and

1996-10-23

1998-03-10

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

Ion plating or implantation

20419215, 20419216, 427331, 427404, 4274192, 4274197, 427457, 427533, C23C 1406

Patent

active

057259135

ABSTRACT:
A composite material having high hardness comprises a carbon nitrogen compound, such as CN.sub.x where x is greater than 0.1 and up to 1.33, deposited on a metal or metal compound selected to promote deposition of substantially crystalline CN.sub.x. The carbon nitrogen compound is deposited on a crystal plane of the metal or metal compound sufficiently lattice-matched with a crystal plane of the carbon nitrogen compound that the carbon nitrogen compound is substantially crystalline. A plurality of layers of the compounds can be formed in alternating sequence to provide a multi-layered, superlattice coating having a coating hardness in the range of 45-55 GPa, which corresponds to the hardness of a BN coating and approaches that of a diamond coating.

REFERENCES:
patent: 5110679 (1992-05-01), Haller et al.

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