The improvement of cutting performance in semi-dry condition by the combination of DLC coating and CVD smooth surface diamond coating

Hanyu, Hiroyuki; Kamiya, Shoji; Murakami, Yoshihiko; Kondoh, Yoshihiko

doi:10.1016/j.surfcoat.2005.02.022

Cited by 31 publications

(17 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to solve the associated problems, it is necessary to develop coating techniques for molding the surface of the tungsten carbide. DLC coating, which has been studied in a number of fields, is characterized by extreme hardness, high elasticity, abrasion resistance and chemical stability [6][7][8][9][10]. Demonstrating diamond-like properties, DLC can be produced through various methods, such as ion beam puttering [11], ECR CVD (Electron cyclotron Resonance Chemical Vapor Deposition) [12], PECVD (Plasma Enhanced Chemical Vapor Deposition) [13], laser ablation [14], and FVAS (Filtered Vacuum Arc Source) [15,16], and has high industrial application.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Characteristics of DLC Coating Thin Film in Tungsten Carbide for Production of Medical Thermal-Infrared Lenses

Park¹,

김태곤²,

Woo³

2014

Transactions on Electrical and Electronic Materials

View full text Add to dashboard Cite

This study was carried out on DLC thin film deposition technology used in infrared optical system production as a method of reducing the shape changes of the molding core and the consequent loss of life. Experiments on the deposition on silicon wafer and tungsten carbide used as a substrate for molding core were conducted at each processing condition using a filtered arc system, and it was found that the surface and mechanical properties were of the greatest quality when the substrate bias voltage of -150 V was used. In addition, it was confirmed that the PV and Ra characteristics were improved by the deposition of the DLC thin film.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of Characteristics of DLC Coating Thin Film in Tungsten Carbide for Production of Medical Thermal-Infrared Lenses

Park¹,

김태곤²,

Woo³

2014

Transactions on Electrical and Electronic Materials

View full text Add to dashboard Cite

show abstract

“…It possesses many desirable qualities such as high hardness, high optical band gap, high electrical resistivity, chemical inert and anti-adhering, low friction and wear coefficient properties and it can be deposited at substrate temperature lower than 200°C. Great performance improvement has been achieved by applying DLC coatings on conventional cutting tools [8][9][10]. However, no attempts have been reported on micro tools.…”

Section: Introductionmentioning

confidence: 99%

Micro milling performance assessment of diamond-like carbon coatings on a micro-end mill

Cheng

2013

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

In micro milling, unpredictable tool life and premature tool failures are the major constraints for its industrial applications, and prolongation of the tool life so as to enhance the tooling performance presents great challenges. Appropriate coating techniques potentially offer a feasible and promising solution. In the research presented, diamond-like carbon (DLC) films are deposited on a Ø500µm diameter tungsten carbide (WC) micro end mill by the plasma enhanced chemical vapor deposition (PE-CVD) process. Coating characterization has been undertaken and the DLC coatings are found in good coverage on the tool except for a slight delaminating on the edge corners. Besides, the surface of the amorphous coatings is much smoother than that of WC. In addition, comprehensive cutting performance of the DLC coated tool in dry slot milling of Al 6061-T6 has been compared with those of uncoated tools in both dry and wet conditions. It is observed that the use of DLC coatings can reduce the cutting forces, lessen the tool wear, improve the surface roughness and minimize the microburr formation as compared to the corresponding performance of an uncoated tool in dry cutting. However, the performance improvement is still unreachable to those resulting from the cutting fluid influence.

show abstract

“…Generally, due to its low shear strength, when applied on a sliding surface, the DLC coatings can lower friction and wear and for that reason are considered as solid lubricants [4]. However, in abrasive conditions, DLC coatings do not have enough endurance [5].…”

Section: Introductionmentioning

confidence: 99%

A DLC/diamond bilayer approach for reducing the initial friction towards a high bearing capacity

Amaral¹,

Carreira²,

Fernandes³

et al. 2012

Wear

View full text Add to dashboard Cite

Sliding contact mechanics is used to account for the net increase of the bearing capacity of high wearresistant CVD diamond coatings when an outer layer of a DLC lubricant film is deposited on their top surface. Experimental results, namely the critical failure load, taken from reciprocating ball-on-plate tribological testing of such DLC/diamond bilayers, are on the basis of this statement. DC magnetron sputtering was used to grow thin DLC lubricant coatings (non-hydrogenated and hydrogenated varieties) on the top of CVD diamond films (microcrystalline and nanocrystalline types). The application of the von Mises maximum yield parameter (ffiffiffiffi J 2 p) criterion demonstrates to be an adequate method for designing low-friction and high-bearing capacity systems for high-demanding tribological applications. Calculation of ffiffiffiffi J 2 p supports that the most significant increase observed on the coatings' bearing capacity (from 20 N to 60 N) takes place when microcrystalline diamond is coated by hydrogenated DLC that decreases the initial friction coefficient peak (from 0.76 to 0.41).

show abstract

The improvement of cutting performance in semi-dry condition by the combination of DLC coating and CVD smooth surface diamond coating

Cited by 31 publications

References 7 publications

Analysis of Characteristics of DLC Coating Thin Film in Tungsten Carbide for Production of Medical Thermal-Infrared Lenses

Analysis of Characteristics of DLC Coating Thin Film in Tungsten Carbide for Production of Medical Thermal-Infrared Lenses

Micro milling performance assessment of diamond-like carbon coatings on a micro-end mill

A DLC/diamond bilayer approach for reducing the initial friction towards a high bearing capacity

Contact Info

Product

Resources

About