DLC coatings for tribotechnical purposes: features of the structure and wear resistance

Abstract

The article presents the results of metal-physical and tribological studies of carbon thin films - diamond-like coatings (DLC), obtained by vacuum ion-plasma technology. The most interesting results are the gradient distribution of the ratio of carbon electronic configurations sp3/sp2 over the depth of the coating, obtained by the XPS method. The structure of such a coating, as it approaches the substrate, transforms from DLC to amorphous graphite (GLC). This feature manifests itself in the mechanism of coating wear during tribological tests. Its wear occurs by the abrasion mechanism, similar to high-strength rubbers.

Effects of Different Silicon Substrates on the Structure and Properties of Deposited Diamond‐like Carbon Films

“…Silicon can be used as the deposition intermediate layer of cemented carbide and fabricated chips, solar cells, thin‐film transistors, etc. [ 25 ] Silicon is the raw material of ultrapure silicon in the electronic industry. Silicon single crystal doped with specific trace impurities can be made into high‐power transistors, rectifiers, solar cells, thyristors, and various integrated circuits (including chip substrates and CPU in computers).…”

The tribological performance of W-DLC in solid–liquid lubrication system addivated with Cu nanoparticles

“…Studies on solid-liquid composite lubrication systems have become the subject of various experimental and theoretical research activities in recent times, because they can largely lower friction-energy consumption and withstand severe environments [1][2][3][4][5]. Diamondlike carbon (DLC), a solid lubricating film exhibiting high hardness, wear resistance and low friction when used in many non-lubricated conditions, is also attractive for oil lubrication conditions including car engines, valves, transmission gear and bearing [6][7][8].…”