Optimization and Characterization of Adhesion Properties of DLC Coatings on Different Substrates

Waseem, Bilal; Alam, Shah; Irfan, Muhammad; Shahid, Muhammad; Farooq, Muhammad; Soomro, Badaruddin; Hashim, Siti Zaiton Mohd; Iqbal, Rafhat

doi:10.1016/j.matpr.2015.11.041

Cited by 16 publications

(6 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This demonstrates brittle character of rupture due to greater hardness of DLC-2 sample, producing higher acoustic emissions. It has been reported that harder substrates show better adhesion and produces higher acoustic emission when film delamination occurs 31 .…”

Section: Discussionmentioning

confidence: 99%

Dependence of Wear and Mechanical Behavior of Nitrocarburized/CrN/DLC Layer on Film Thickness

et al. 2019

View full text Add to dashboard Cite

Diamond-like carbon (DLC) films are amorphous metastable carbon form that provide interesting mechanical and tribological properties. The role of film thickness influence upon wear and mechanical properties is of interest and not yet fully reported. In this study, two samples of previously plasma nitrocarburized, quenched and tempered H13 steel were duplex treated. First, a physical vapor deposition (PVD) chromium nitride (CrN) layer was applied, followed by a top final diamond-like carbon layer applied by plasma-enhanced chemical vapor deposition (PECVD). To evaluate thicknesses influence on mechanical and wear properties of coatings, samples were treated using two different thicknesses of both layers. In this study, the thickest CrN and DLC case presented higher hardness and better tribological properties, however, its failure occurs in brittle fashion.

show abstract

Section: Discussionmentioning

confidence: 99%

Dependence of Wear and Mechanical Behavior of Nitrocarburized/CrN/DLC Layer on Film Thickness

et al. 2019

View full text Add to dashboard Cite

show abstract

“…According to this, new coating techniques were developed that greatly improve the adhesion, showing a combination of the excellent tribological and mechanical performance of DLC coatings with a high adherence. In recent works, different adhesion values related to DLC coatings were reported, showing the scratch mark at 20 N load [21] or at approximately 35 N load [22], although these values are low for the aforementioned industrial applications. Another alternative to increase the adhesion is based on a previous thermochemical pretreatment such as plasma nitriding [23], although this type of treatment could penalize the corrosion resistance of the metallic substrate [24].…”

Section: Introductionmentioning

confidence: 98%

A Comparative Study in the Tribological Behavior of DLC Coatings Deposited by HiPIMS Technology with Positive Pulses

Garcı́a

Rivero

Barba³

et al. 2020

Metals

View full text Add to dashboard Cite

During the last few decades, diamond-like carbon (DLC) coatings were widely used for tribological applications, being an effective tool for improving the performance and the useful life of different machining tools. Despite its excellent properties, among which stand out a high hardness, a very low friction coefficient, and even an excellent wear resistance, one of the main drawbacks which limits its corresponding industrial applicability is the resultant adhesion in comparison with other commercially available deposition techniques. In this work, it is reported the tribological results of a scratch test, wear resistance, and nanoindentation of ta-C and WC:C DLC coatings deposited by means of a novel high-power impulse magnetron sputtering (HiPIMS) technology with “positive pulses”. The coatings were deposited on 1.2379 tool steel which is of a high interest due to its great and wide industrial applicability. Finally, experimental results showed a considerable improvement in the tribological properties such as wear resistance and adhesion of both types of DLC coatings. In addition, it was also observed that the role of doping with W enables a significant enhancement on the adhesion for extremely high critical loads in the scratch tests.

show abstract

“…Therefore, in this research, the adhesion strength of the DLC coating according to the hydrogen charging was measured and evaluated quantitatively. To accomplish this, three critical loads measured through the scratch experiments were defined [33,34]. The first critical load (Lc1) was the initiation of the initial cracking of the coating, the second critical load (Lc2) was the chipping caused by the coating cracking and partially delaminating, and the third critical load (Lc3) was the complete destruction of the coating caused by the continuous and complete delamination (spalling).…”

Section: Resultsmentioning

confidence: 99%

Effect of hydrogen embrittlement on the adhesion strength and wear resistance of DLC-coated 316L stainless steel for application in hydrogen valves of FCEVs

Kim,

Shin

2024

Preprint

View full text Add to dashboard Cite

Diamond-like carbon (DLC) coating is a surface coating technology with excellent hydrogen permeation resistance and wear resistance. However, it is difficult to completely prevent hydrogen permeation, and when hydrogen penetrates into the coating layer, the DLC coating is adversely affected. Therefore, we investigated the effect of hydrogen embrittlment on the adhesion strength and wear resistance of the DLC coating layer. As the results of the research, the surface roughness of the DLC coating was increased by a maximum of 3.8 times with hydrogen charging, and the delamination ratio of the DLC coating reached about 58%. In addition, the Lc3, which refers to the adhesion strength corresponding to the complete delamination of the DLC coating, was decreased by a maximum of 2.0 N due to hydrogen permeation. In addition, the wear resistance decreased due to hydrogen permeation, and the exposed width of the substrate due to wear increased by more than 4 times. It was also determined that hydrogen blistering or hydrogen-induced cracking occurred at the interface between the DLC coating and the chromium buffer layer due to hydrogen permeation, which decreased the durability of the DLC coating.

show abstract

Optimization and Characterization of Adhesion Properties of DLC Coatings on Different Substrates

Cited by 16 publications

References 2 publications

Dependence of Wear and Mechanical Behavior of Nitrocarburized/CrN/DLC Layer on Film Thickness

Dependence of Wear and Mechanical Behavior of Nitrocarburized/CrN/DLC Layer on Film Thickness

A Comparative Study in the Tribological Behavior of DLC Coatings Deposited by HiPIMS Technology with Positive Pulses

Effect of hydrogen embrittlement on the adhesion strength and wear resistance of DLC-coated 316L stainless steel for application in hydrogen valves of FCEVs

Contact Info

Product

Resources

About