Pdf evaluation of amorphous diamondlike carbon and. It can have a high mechanical hardness, chemical inertness, optical transparency, and it is a wide band gap semiconductor. The excellent physical properties of this stable, free standing monolayer amorphous carbon could prove useful for permeation and diffusion barriers in applications such as magnetic recording. Synthesis and properties of freestanding monolayer. Although films of diamondlike carbon dlc and hexagonal boron nitride hbn have shown low dielectric constants in the range of 3 to 4, these materials have been unsuitable for use as. Researchers have also examined the effects that surface roughness and. Diamondlike carbon dlc is a metastable form of amorphous carbon containing a significant fraction of sp 3 bonds. Tribological properties of amorphous diamondlike carbon coatings m. Diamondlike carbon dlc is an amorphous carbon with significant sp 3 bondings. Diamondlike carbon an overview sciencedirect topics. Diamondlike carbon is a name attributed to a variety of amorphous carbon materials, some containing up to about 50 at. Thus, dlc is distinguished by the amounts of hydrogen and sp3bonded carbon, and the cluster struc. Diamondlike carbon films contain significant numbers of sp3 type c bonds, giving them attractive physical and mechanical properties that are similar to diamond. Dlc films have widespread applications as protective coatings in areas such as optical.
Dlc was formed mainly by cvd using gaseous hydrocarbon such as methane, benzene, and acetylene. Raman spectroscopy of amorphous, nanostructured, diamond. The gas molecules of the hydrocarbon are pulled apart into ionized c and h atoms by plasma assistance, before being deposited onto a substrate. H to hydrogenated tetrahedral amorphous carbon tac.