Mechanical and tribological properties of DLC coatings deposited by plasma‐based ion implantation and deposition method on polyoxymethylene

2020 ◽  
Vol 52 (12) ◽  
pp. 850-854
Author(s):  
Yuki Hirayama ◽  
Morimasa Nakamura ◽  
Takashi Matsuoka
Keyword(s):  
Ion Implantation ◽  
Tribological Properties ◽  
Deposition Method ◽  
Dlc Coatings ◽  
Mechanical And Tribological Properties

Mechanical and tribological properties of carbon and nitrogen consecutive ion implantation into aluminium

2006 ◽  
Vol 201 (3-4) ◽  
pp. 1488-1494 ◽  
Author(s):  
J.C. Szcancoski ◽  
C.E. Foerster ◽  
F.C. Serbena ◽  
T. Fitz ◽  
U. Kreißig ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Tribological Properties ◽  
Carbon And Nitrogen ◽  
Mechanical And Tribological Properties

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.

scholarly journals Investigation of Nano-Mechanical and- Tribological Properties of Hydrogenated Diamond Like Carbon (DLC) Coatings

2016 ◽  
Vol 33 (6) ◽  
pp. 769-776 ◽  
Author(s):  
Y.-R. Jeng ◽  
S. Islam ◽  
K-T. Wu ◽  
A. Erdemir ◽  
O. Eryilmaz
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Friction Coefficient ◽  
Young’S Modulus ◽  
Tribological Properties ◽  
Young's Modulus ◽  
Chemical Vapour ◽  
Diamond Like Carbon ◽  
Dlc Coatings ◽  
Mechanical And Tribological Properties

AbstractHydrogenated diamond like Carbon (H-DLC) is a promising lubricious coating that attracted a great deal of interest in recent years mainly because of its outstanding tribological properties. In this study, the nano-mechanical and -tribological properties of a range of H-DLC films were investigated. Specifically, four kinds of H-DLC coatings were produced on Si substrates in pure acetylene, pure methane, 25% methane + 75% hydrogen, 50% methane + 50% hydrogen discharge plasmas using a plasma enhanced chemical vapour deposition (PECVD) system. Nano indentation was performed to measure the mechanical properties such as hardness and young's modulus and nanoscartching was performed to investigate the frictional behavior and wear mechanism of the H-DLC samples in open air. Moreover, Vickers indentation method was utilized to assess the fracture toughness of the samples. The results revealed that there is a strong correlation between the mechanical properties (hardness, young's modulus, fracture toughness) and the friction coefficient of DLC coatings and the source gas chemistry. Lower hydrogen to carbon ratio in source gas leads to higher hardness, young's modulus, fracture toughness and lower friction coefficient. Furthermore, lower wear volume of the coated materials was observed when the friction coefficient was lower. It was also confirmed that lower hydrogen content of the DLC coating leads to higher wear resistance under nanoscratch conditions.

scholarly journals Evaluating the Mechanical and Tribological Properties of DLC Nanocoated Aluminium 5051 Using RF Sputtering

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
L. Natrayan ◽  
Anjibabu Merneedi ◽  
Dhinakaran Veeman ◽  
S. Kaliappan ◽  
P. Satyanarayana Raju ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Rf Sputtering ◽  
Wear Behaviour ◽  
Deposition Mechanism ◽  
Dlc Coatings ◽  
Sputtering Deposition ◽  
Mechanical And Tribological Properties ◽  
Automotive Engines ◽  
Dlc Coating ◽  
Insight Into

The diamond-like carbon- (DLC-) coating technique is used in the sliding parts of automotive engines, among other applications, to reduce friction and wear. In this work, DLC has been coated on the Aluminium 5051 sample to assess the mechanical and tribological properties. A sputtering deposition mechanism is used, and the DLC is coated using a graphite target. The developed DLC coatings are tested for adhesion strength, hardness, chemical composition using XRD, and wear behaviour. The developed DLC thin films have considerably increased the wear behaviour of the Aluminium 5051 sample and have fulfilled the objective of this study. The XRD data indicated the presence of amorphous carbon in the coating with a threefold increase to the hardness of the naked aluminium. This study provides insight into improving the aluminium wear resistance by developing a considerably hard coating.

Carbon ion implantation into aluminium: Mechanical and tribological properties

2006 ◽  
Vol 200 (18-19) ◽  
pp. 5210-5219 ◽  
Author(s):  
C.E. Foerster ◽  
S.L.R. da Silva ◽  
T. Fitz ◽  
T. Dekorsy ◽  
F. Prokert ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Tribological Properties ◽  
Carbon Ion ◽  
Mechanical And Tribological Properties

THE INFLUENCE OF ION IMPLANTATION ON THE PROPERTIES OF Ti6Al4V TITANIUM ALLOY IN BIOTRIBOLOGICAL SYSTEMS

Tribologia ◽  
2020 ◽  
Vol 292 (4) ◽  
pp. 27-36
Author(s):  
Dariusz Ozimina ◽  
Katarzyna Piotrowska ◽  
Monika Madej ◽  
Arkadiusz Granek
Keyword(s):  
Titanium Alloy ◽  
Ion Implantation ◽  
Tribological Properties ◽  
Wear Mechanism ◽  
Geometrical Structure ◽  
Tribological Tests ◽  
Mechanical And Tribological Properties ◽  
Before And After ◽  
Instrumental Indentation ◽  
Titanium Alloy Ti6al4v

The article is devoted to the assessment of the geometrical structure of the surface as well as the mechanical and tribological properties of the surface layers obtained in the process of ion implantation. The titanium alloy Ti6Al4V used in biotribological systems was implanted with nitrogen and argon ions. Investigations of the geometrical structure of the surface before and after the tribological tests were carried out using confocal microscopy. The hardness of the tested materials was determined by the instrumental indentation method using a Vickers indenter. A nanotribometer was used for tribological tests. The tests were carried out in a reciprocating motion under conditions of technically dry friction and friction with the lubrication of Ringer's solution. SEM scanning microscopy was used to determine the width of the wear pattern and the wear mechanism. The conducted research showed that the hardness of the tested materials increased as a result of ion implantation. The tribological tests showed that the use of ion implantation improves the tribological properties, and the dominant wear mechanism was abrasive wear.

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