Tailoring self-lubricating, wear-resistance, anticorrosion and antifouling properties of Ti/(Cu, MoS2)-DLC coating in marine environment by controlling the content of Cu dopant

Multi-layer diamond-like carbon (DLC) coating, 150 and 220 nm thick were deposited by negative pulsed d.c. bias induced with magnetron sputtering. The objective of this research is to resolve a wear resistance in terms of DLC coating residual stress and mechanical properties. The bias was controlled from - 200 to 0 V during 10 second with point contacting controller. The surface structure was continuously fabricating to soft and hard-layer during deposition. It was shown that the compressive residual stress and hardness were 0.09, 18 GPa under multi-layer coating condition. The as-deposited DLC coating has a relatively higher wear resistance than unmodified DLC under nanoabrasive wear. It also showed that multi-layer DLC coating had no wear until 400 nN. The decreased residual stress and increased film hardness in the multi-layer coating gave a rise to increase wear resistance.

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Mechanical properties and microstructural analysis of a diamond-like carbon coating on an alumina/glass composite

Journal of Materials Research ◽

10.1557/jmr.1996.0244 ◽

1996 ◽

Vol 11 (8) ◽

pp. 1934-1942 ◽

Cited By ~ 17

Author(s):

S. Christiansen ◽

M. Albrecht ◽

H. P. Strunk ◽

H. Hornberger ◽

P.M. Marquis ◽

...

Keyword(s):

Wear Resistance ◽

Carbon Coating ◽

Microstructural Analysis ◽

Aluminosilicate Glass ◽

Surface Topology ◽

Diamond Like Carbon ◽

Microstructural Properties ◽

Glass Composite ◽

Substrate Roughness ◽

Dlc Coating

We investigate the mechanical and microstructural properties of a diamond-like carbon coating (DLC) which is deposited by plasma enhanced chemical vapor deposition (PECVD) onto an alumina/aluminosilicate glass composite used for biomedical applications. Ball-on-ring tests yield a fracture strength that is essentially influenced by the surface topology/roughness. The surface topology of the coating is investigated by atomic force microscopy (AFM). Tribology tests and nanoindentation represent the wear resistance and hardness; these are properties that are mainly influenced by the microstructural properties of the DLC coating. This microstructure is investigated by transmission electron microscopy (TEM) and analyzed by parallel electron energy loss spectroscopy (PEELS). For the general applicability of the coated composite, the interfacial adhesion of the DLC coating on the comparably rough substrate (roughness amplitudes and wavelengths are in the micrometer range) is important. Therefore, we focus on TEM investigations that show the interface to be free of gaps and pores that we, together with a characteristic microstructure adjacent to the interface, relate to the excellent adhesion. The interlayer consists of a high density of SiC grains, part of them directly bound to the substrate, and part of them bound to other SiC grains. This interlayer is followed by an essentially different region of the coating as concerns the microstructure; this region consists of nanocrystalline diamond particles embedded in an amorphous carbon matrix. It is this heterogeneous microstructure to which we attribute (i) the good adhesion based upon the interface stabilizing SiC grains, and (ii) the high hardness and wear resistance based upon the diamond nanocrystals in the coating.

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Improved Adhesion of the DLC Coating Using HiPIMS with Positive Pulses and Plasma Immersion Pretreatment

Coatings ◽

10.3390/coatings11091070 ◽

2021 ◽

Vol 11 (9) ◽

pp. 1070

Author(s):

Iñigo Gómez ◽

Adrián Claver ◽

José Antonio Santiago ◽

Iván Fernandez ◽

Jose Fernandez Palacio ◽

...

Keyword(s):

Wear Resistance ◽

Physical Vapor Deposition ◽

High Wear Resistance ◽

Low Friction ◽

New Techniques ◽

Dlc Coatings ◽

Dlc Coating ◽

Chemical Inertness ◽

Modification Technique ◽

Tribomechanical Properties

Diamond-like carbon (DLC) coatings are used due to their extraordinary tribomechanical properties, great hardness, high elastic modulus, high wear resistance, low friction coefficient and chemical inertness, which provide them with biocompatibility. Compared to other physical vapor deposition (PVD) coatings of transition nitrides and carbonitrides, DLC has limited adhesion, so it is necessary to develop new techniques to overcome this limitation. This work reports the results of scratch testing for the measurement of adhesion and of tests for wear resistance and nanoindentation in AISI 316L stainless steel coated with a WC:C coating, produced using novel high-power impulse magnetron sputtering (HiPIMS) technology with positive pulses. In addition, the use of a preceding surface modification technique, specifically plasma immersion ion implantation (PIII), was studied with the aim of optimizing the adhesion of the coating. The results show how the coating improved the tribomechanical properties through the use of positive pulse HiPIMS compared to conventional HiPIMS, with an adhesion result that reached critical load values of 48.5 N and a wear coefficient of 3.96 × 10−7 mm3/nm.

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Evaluation of Tribological Performance of Hydrogenated Dlc by Surface Texturing in the Presence of Palm Based Tmp Ester at Different Temperatures

The Academic Research Community Publication ◽

10.21625/archive.v2i4.390 ◽

2019 ◽

Vol 2 (4) ◽

pp. 473

Author(s):

Mahendra Varman ◽

Arslan Ahmed ◽

Haji Hassan Masjuki ◽

Md. Abul kalam ◽

N. W.M. Zulkifli

Keyword(s):

Wear Resistance ◽

High Temperatures ◽

Coefficient Of Friction ◽

Amorphous Carbon ◽

Surface Texturing ◽

Tribological Performance ◽

Coating Performance ◽

Dlc Coating ◽

Different Temperatures ◽

Hydrogenated Amorphous

Surface textured and DLC coated (hydrogenated amorphous carbon) samples were assessed for their coating performance at 40 oC, 80 oC and 125 oC. As a result, textured a-C:H DLC demonstrated higher but stable coefficient of friction (COF) at high temperatures as compared to un-textured DLC samples. However, textured DLC samples showed higher wear resistance compared to un-textured DLC coating. The enhancement can be elucidated by the lower graphitization of textured DLC samples.

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Guarantee on Fatigue Reliability of Multi-Layered DLC-Coating Given to CD-Carburized SCM415

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.306-308.193 ◽

2006 ◽

Vol 306-308 ◽

pp. 193-198

Author(s):

Masato Sato ◽

Hideto Suzuki

Keyword(s):

Wear Resistance ◽

Surface Modification ◽

Parent Material ◽

Functional Evaluation ◽

High Ductility ◽

Fatigue Reliability ◽

Fatigue Characteristic ◽

Soft Layer ◽

Dlc Coating ◽

Carburized Steel

In this research, surface modification was given to CD (Carbide Dispersion)-carburized steel used for sliding parts of vehicles, and functional evaluation was performed. It developed the DLC-coating which has multi-layered structure according to a UBMS (UnBalance-Magnetron-Sputtering) process as aims at improvement in the tribological properties in the sliding parts for vehicles. In order to maintain the adhesion with parent material (CD-carburized steel), intermediate layer that gradient hardness was generated. Structure of multi-layered part was made into ten layers. The multi-layered part consists of soft layers and hard layers. A soft layer bears high-ductility and the hard layer bears wear resistance and tribological property. Moreover, as functional evaluation of coating material, it investigated about the friction wear characteristic and influence that a DLC-coating has on the fatigue characteristic.

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Influence of Substrate Nitriding on Adhesion, Friction and Wear Resistance of DLC (Diamond-Like Carbon)-Coatings

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.438.211 ◽

2010 ◽

Vol 438 ◽

pp. 211-218 ◽

Cited By ~ 5

Author(s):

Wolfgang Tillmann ◽

Evelina Vogli ◽

Fabian Hoffmann ◽

Patrick Kemdem

Keyword(s):

Wear Resistance ◽

Physical Vapor Deposition ◽

Friction And Wear ◽

Steel Substrate ◽

Substrate Material ◽

Diamond Like Carbon ◽

Wide Field ◽

Dlc Coatings ◽

Dlc Coating ◽

Adhesion Friction

Since diamond like carbon layers feature excellent mechanical and tribological behavior under defined environmental circumstances, they are well established in a wide field of industrial and automotive applications in the last decade. However, the pretreatment of the substrate plays also an important role in supporting and enforcing the excellent properties of the coatings. This work analyses the effect of the plasma nitrided cold working steel substrate (80CrV2) on the adhesion, friction and wear resistance of DLC-coatings and compares it to the performance of DLC-coatings applied on a non-hardened substrate material. Therefore the grinded and polished specimens were nitrogen-hardened in an Arc-PVD (Physical Vapor Deposition)-device before the DLC-coating was applied in a Magnetron Sputter-PVD-process. In order to measure the hardness of the thin film coating, a nanoindenter was used. The adhesion was tested with a scratch tester and the wear resistance was measured by using a Ball-on-disc-tester. A 3D-profilometer and a SEM (Scanning Electron Microscope) were utilized to analyze the scratches and wear tracks on the samples. With these results correlations between the substrate nitriding and the mechanical and tribological performance of the DLC-coating were made.

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EVALUATION OF TRANSFORMED LAYER HARDNESS OF DLC COATING AFTER FRICTION TEST

Jurnal Teknologi ◽

10.11113/jt.v78.9761 ◽

2016 ◽

Vol 78 (10-3) ◽

Author(s):

Nor Azmmi Masripan ◽

Yosuke Tsukiyama ◽

Kenji Ohara ◽

Noritsugu Umehara ◽

Hiroyuki Kousaka ◽

...

Keyword(s):

Wear Resistance ◽

Friction Coefficient ◽

Boundary Lubrication ◽

Scratch Test ◽

Tribological Performance ◽

Diamond Like Carbon ◽

Friction Test ◽

Friction Behavior ◽

Sliding Interface ◽

Dlc Coating

Diamond-like carbon (DLC) provide very excellence performance in term of friction coefficient and wear resistance under boundary lubrication. the nano characteristic of the transformed layer has not been studied in terms of its hardness which is believed to have a significant effect in the tribological performance. This study presented the scratch test of the DLC transformed layer was obtained from the AFM scratch test that governs the friction behavior of DLC. As a result, the hardness of the DLC transformed layer depends on the oil temperature, where the sliding interface of DLC softened during the friction test due to graphitization process

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DLC Coating of Rolling Bearings by Triboadhesion and Its Effect on Their Dynamic Response

World Tribology Congress III, Volume 2 ◽

10.1115/wtc2005-63777 ◽

2005 ◽

Author(s):

Jose´ Mari´a Rodri´guez Lelis ◽

Eduardo Rami´rez Flores ◽

Jorge Coli´n Ocampo

Keyword(s):

Thin Film ◽

Wear Resistance ◽

Dynamic Response ◽

Vibration Signal ◽

Ball Bearings ◽

Rolling Bearings ◽

Vibration Signals ◽

Dlc Coating ◽

Rolling Surface

In this work vibration signals were obtained for ball bearings with and without DLC coating. The coating was carried out by triboadhesion, and only the inner rolling surface of the bearings was coated. Here it was found that the amplitude of the vibration signal is modified by the thin film DLC coating, and that this can be related to the stiffness of the system and finally to wear resistance of the ball bearings.

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