Tribological Properties of DLC Coatings in Helium

2012 ◽  
Vol 47 (2) ◽  
pp. 223-230 ◽  
Author(s):  
B. Podgornik ◽  
J. Vižintin ◽  
U. Borovšak ◽  
F. Megušar
Keyword(s):  
Tribological Properties ◽  
Dlc Coatings

scholarly journals Effect of temperature and mating pair on tribological properties of DLC and GLC coatings under high pressure lubricated by MoDTC and ZDDP

Friction ◽  
2020 ◽  
Author(s):  
Kang Liu ◽  
Jia-jie Kang ◽  
Guang-an Zhang ◽  
Zhi-bin Lu ◽  
Wen Yue
Keyword(s):  
Tribological Properties ◽  
Friction And Wear ◽  
Effect Of Temperature ◽  
Wear Properties ◽  
Dlc Coatings ◽  
Base Oil ◽  
Two Temperatures ◽  
Friction And Wear Properties ◽  
Lubrication Conditions ◽  
Better Than

AbstractDiamond-like carbon (DLC) and graphite-like carbon (GLC) coatings have good prospects for improving the surface properties of engine parts. However, further understanding is needed on the effect of working conditions on tribological behaviors. In this study, GLC and two types of DLC coatings were deposited on GCr15 substrate for investigation. The friction and wear properties of self-mated and steel-mated pairs were evaluated. Two temperatures (25 and 90 °C), three lubrication conditions (base oil, molybdenum dithiocarbamate (MoDTC)-containing oil, MoDTC+zinc dialkyldithiophosphate (ZDDP)-containing oil), and high Hertz contact stress (2.41 GPa) were applied in the experiments. The results showed that high temperature promoted the effect of ZDDP on steel-mated pairs, but increased wear under base oil lubrication. The increased wear for steel-mated pairs lubricated by MoDTC-containing oil was due to abrasive wear probably caused by MoO3 and β-FeMoO4. It was also found that in most cases, the tribological properties of self-mated pairs were better than those of steel-mated pairs.

The influence of self-assembled monolayers on tribological properties of Si-DLC coatings

2019 ◽  
Vol 7 (4) ◽  
pp. 045006 ◽  
Author(s):  
M Cichomski ◽  
A Kisielewska ◽  
M Prowizor ◽  
E Borkowska ◽  
I Piwoński ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Self Assembled Monolayers ◽  
Dlc Coatings ◽  
Assembled Monolayers ◽  
Self Assembled

Tribological properties of DLC coatings deposited on PPS

2004 ◽  
Vol 2004.7 (0) ◽  
pp. 287-288
Author(s):  
Atsumu HONDA ◽  
Takashi MATSUOKA ◽  
Kazuhiko SAKAGUCHI ◽  
Yasuhiro MIKI
Keyword(s):  
Tribological Properties ◽  
Dlc Coatings

Tribological Properties of Pulsed Laser Deposited WSex(Ni)/DLC Coatings

2004 ◽  
Vol 17 (2) ◽  
pp. 289-294 ◽  
Author(s):  
V. Yu. Fominski ◽  
V.N. Nevolin ◽  
R.I. Romanov ◽  
V.I. Titov ◽  
W. Scharff
Keyword(s):  
Tribological Properties ◽  
Pulsed Laser ◽  
Dlc Coatings

scholarly journals Investigation of changes in the properties of diamond-like films under friction by the XPS method

2021 ◽  
Vol 2131 (5) ◽  
pp. 052038
Author(s):  
A V Sidashov ◽  
M V Boiko ◽  
E I Luneva ◽  
A M Popov
Keyword(s):  
Tribological Properties ◽  
Photoelectron Spectroscopy ◽  
Etching Time ◽  
Energy Position ◽  
Dlc Coatings ◽  
Mechanical And Tribological Properties ◽  
Dlc Coating ◽  
Electron Line ◽  
Antifriction Properties

Abstract The combination of unique physicochemical, mechanical and tribological properties of diamond-like coatings determines the prospects for their use in critical friction units, including those operating in a rarefied atmosphere and vacuum. The properties of diamond-like carbon (DLC) coatings depend on the contribution of the sp2 and sp3 fractions of the carbon hybrid atomic electron orbitals. Modern methods of determining the graphite and diamond proportion in coatings are time-consuming and insufficiently accurate. In addition, the determination of the sp3/sp2 ratio is often difficult due to the displacement of the energy position of the C1s electron line. In this paper, the change in the chemical state of carbon over the thickness of a diamond-like coating is studied by X-ray photoelectron spectroscopy. Analysis of the carbon line fine structure of the differential graphite spectra (sp2 bonds) and diamond (sp3 bonds) allowed us to establish the parameter δ, which determines the ratio of the graphite and diamond components in the DLC coating. Profiling with Ar+ ions of the diamondlike coating surface showed that with an increase in the etching time, the proportion of amorphized carbon increases, which means that the antifriction properties increase with the abrasion of the coating. The obtained regularities allow us to predict changes in the tribological properties of DLC coatings during operation. Ion profiling also allows to determine the thickness of coatings with high accuracy.

1409 Tribological properties of nano-multilayered TiAlN/DLC coatings by UBMS coating system

2010 ◽  
Vol 2010.47 (0) ◽  
pp. 533-534
Author(s):  
Yosio HARUYAMA ◽  
Junichi YOSHIDA ◽  
Noriyo HORIKAWA ◽  
Takeshi SUGITA
Keyword(s):  
Tribological Properties ◽  
Coating System ◽  
Dlc Coatings

scholarly journals Modification of Surface and Tribological Properties of DLC Films by Adding Silver Content

2008 ◽  
Author(s):  
H.-S. Zhang ◽  
J. L. Endrino ◽  
A. Anders
Keyword(s):  
Thin Films ◽  
Atomic Force Microscopy ◽  
Tribological Properties ◽  
Silver Content ◽  
Diamond Like Carbon ◽  
Dlc Coatings ◽  
Force Microscopy ◽  
Atomic Force ◽  
Plasma Immersion Ion Implantation ◽  
Scratch Tests

The incorporation of silver into the diamond-like carbon (DLC) coatings has shown excellent potential in various applications; therefore the surface and tribological properties of silver-containing DLC thin films deserve to be investigated. In this study we have deposited silver-containing hydrogenated and hydrogen-free DLC coatings by plasma immersion ion implantation and deposition (PIII-D) methods. Atomic force microscopy (AFM) and nano-scratch tests were used to study the surface and tribological properties. The silver incorporation had only slight effects on hydrogenated DLC coatings. However, the incorporation of silver has significant effect on hydrogen-free DLC of smoothing the surface and increasing the surface energy. Those effects have been illustrated and explained in the context of experimental results.

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