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Title: Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride carbide and carbonitride

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. 10 figs.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
OSTI Identifier:
597156
Patent Number(s):
5725913
Application Number:
PAN: 8-735,685; CNN: Grant MSS-9203239
Assignee:
Northwestern Univ., Evanston, IL (United States)
DOE Contract Number:  
FG02-90ER45434
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 10 Mar 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBONITRIDES; HARDNESS; SURFACE COATING; COMPOSITE MATERIALS; LAYERS; PROTECTIVE COATINGS

Citation Formats

Wong, M S, Li, D, Chung, Y W, Sproul, W D, Chu, Xi, and Barnett, S A. Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride carbide and carbonitride. United States: N. p., 1998. Web.
Wong, M S, Li, D, Chung, Y W, Sproul, W D, Chu, Xi, & Barnett, S A. Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride carbide and carbonitride. United States.
Wong, M S, Li, D, Chung, Y W, Sproul, W D, Chu, Xi, and Barnett, S A. Tue . "Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride carbide and carbonitride". United States.
@article{osti_597156,
title = {Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride carbide and carbonitride},
author = {Wong, M S and Li, D and Chung, Y W and Sproul, W D and Chu, Xi and Barnett, S A},
abstractNote = {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. 10 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {3}
}