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Title: Ultrahard carbon nanocomposite films

Abstract

Modest thermal annealing to 600 degree sign C of diamondlike amorphous-carbon (a-C) films grown at room temperature results in the formation of carbon nanocomposites with hardness similar to diamond. These nanocomposite films consist of nanometer-sized regions of high density a-C embedded in an a-C matrix with a reduced density of 5%-10%. We report on the evolution of density and bonding topologies as a function of annealing temperature. Despite a decrease in density, film hardness actually increases {approx}15% due to the development of the nanocomposite structure. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2]
  1. Sandia National Laboratories, Albuquerque, New Mexico 87185-1421 (United States)
  2. Department of Materials and Nuclear Engineering, University of Maryland, College Park, Maryland 20742 (United States)
Publication Date:
OSTI Identifier:
20216497
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 76; Journal Issue: 21; Other Information: PBD: 22 May 2000; Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON; THIN FILMS; ANNEALING; HARDNESS; GRAIN SIZE; DENSITY; BONDING; TEMPERATURE DEPENDENCE; EXPERIMENTAL DATA

Citation Formats

Siegal, M. P., Tallant, D. R., Provencio, P. N., Overmyer, D. L., Simpson, R. L., and Martinez-Miranda, L. J. Ultrahard carbon nanocomposite films. United States: N. p., 2000. Web. doi:10.1063/1.126576.
Siegal, M. P., Tallant, D. R., Provencio, P. N., Overmyer, D. L., Simpson, R. L., & Martinez-Miranda, L. J. Ultrahard carbon nanocomposite films. United States. doi:10.1063/1.126576.
Siegal, M. P., Tallant, D. R., Provencio, P. N., Overmyer, D. L., Simpson, R. L., and Martinez-Miranda, L. J. Mon . "Ultrahard carbon nanocomposite films". United States. doi:10.1063/1.126576.
@article{osti_20216497,
title = {Ultrahard carbon nanocomposite films},
author = {Siegal, M. P. and Tallant, D. R. and Provencio, P. N. and Overmyer, D. L. and Simpson, R. L. and Martinez-Miranda, L. J.},
abstractNote = {Modest thermal annealing to 600 degree sign C of diamondlike amorphous-carbon (a-C) films grown at room temperature results in the formation of carbon nanocomposites with hardness similar to diamond. These nanocomposite films consist of nanometer-sized regions of high density a-C embedded in an a-C matrix with a reduced density of 5%-10%. We report on the evolution of density and bonding topologies as a function of annealing temperature. Despite a decrease in density, film hardness actually increases {approx}15% due to the development of the nanocomposite structure. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.126576},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 21,
volume = 76,
place = {United States},
year = {2000},
month = {5}
}