Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride carbide and carbonitride
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.
- Research Organization:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-90ER45434
- Assignee:
- Northwestern University (Evanston, IL)
- Patent Number(s):
- 5,725,913
- Application Number:
- 08/735,685
- OSTI ID:
- 871410
- Resource Relation:
- Patent File Date: 1996 Oct 23
- Country of Publication:
- United States
- Language:
- English
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Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride, carbide and carbonitride
Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride carbide and carbonitride
Related Subjects
composite
materials
including
compounds
carbon
nitrogen
deposited
metal
nitride
carbide
carbonitride
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hardness
comprises
compound
cn
33
selected
promote
deposition
substantially
crystalline
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plane
sufficiently
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plurality
layers
formed
alternating
sequence
provide
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superlattice
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gpa
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bn
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diamond
crystal plane
diamond coating
carbon nitrogen
compound selected
composite materials
metal compound
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superhard composite
hardness comprises
including compounds
omposite materials
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