Ultrahard carbon nanocomposite films
- 22 May 2000
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 76 (21) , 3052-3054
- https://doi.org/10.1063/1.126576
Abstract
Modest thermal annealing to 600 °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 ∼15% due to the development of the nanocomposite structure.Keywords
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