Czasopismo | INŻYNIERIA MATERIAŁOWA | Rocznik 2017 - zeszyt 5

The influence of the structure direction on diamond-like carbon coatings tribological properties

Wpływ ukierunkowania struktury powłok diametopodobnych na właściwości tribologiczne

10.15199/28.2017.5.6

nr katalogowy: 110246
10.15199/28.2017.5.6

Streszczenie

The paper presents results of the structure analysis and tribological testing of a-C:H type diamond-like carbon (DLC) coatings produced by the Plasma Assisted Chemical Vapour Deposition (PACVD) technology on 100Cr6 specimens. PACVD methods allow both deposition of thin films on the materials that can conduct an electrical current, and for non-conductive materials, electricity, using a radio frequency discharge currents and low. Essentially, the PACVD process aimed at the production of the hard surface layer or layers having specific properties: e.g. the protective, anticorrosive, tribological. This article discusses the properties of DLC coatings. The surface and cross-sectional microstructure and the chemical composition were assessed by means of a scanning electron microscope (SEM). The structure was studied using a JSM 7100F microscope with an EDS detector manufactured by JEOL. The coatings were analyzed by means of a Talysurf CCI-Lite non-contact 3D profiler. The wear resistance was established under dry friction conditions and in the presence of boundary lubrication conditions with polyalphaolefin PAO-8 oil and was studied by a ball-on-disc T-01M tribometer with the ball being made of 100Cr6 steel and the disc being made of the of 100Cr6 steel coated with DLC. The tribological tests conducted under technically dry friction and lubrication conditions showed that the diamond-like carbon coating had better properties than substrate material. The application of lubricants caused a decrease in the wear of the elements in friction pair. The use of lubricants in combination with a DLC coating has shown that this type of association of the grater greatly affects the smaller friction resistance.

Abstract

Powłoki diamentopobne DLC cieszą się coraz większym zainteresowaniem ze względu na ich właściwości niskotarciowe i przeciwzużyciowe, dużą twardość, odporność korozyjną oraz stabilność termiczną. Celem pracy było przeprowadzenie analizy wpływu topografii powierzchni, z uwzględnieniem jej kierunkowości, powłok diamentopodobnych na właściwości tribologiczne. Oceniano wpływ powłok, ich składu chemicznego, twardości oraz topografii powierzchni na właściwości tribologiczne.

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Keywords

Bibliografia

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