Effect of sp3–sp2 Transformation on the Wear Rate of the DLC Coating

Гершман, Иосиф; Миронов, А. Е.; Mezrin, A. M.; Torskaya, E. V.; Kuznetsova, T. F.; Lapitskaya, V. A.; Рогачев, А. А.

doi:10.3390/lubricants10050085

Cited by 8 publications

(9 citation statements)

References 29 publications

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“…The friction track profile is shown in Figure 2 (the average friction coefficient was 0.19 [28]), and the change in the surface of the coated sample was analyzed. Below are the results for characteristic surface areas at the boundary and in the middle zone of the friction track.…”

Section: Resultsmentioning

confidence: 99%

“…Coatings were obtained by cathode-arc evaporation using a Platit π311 unit (Platit AG, Selzach, Switzerland). The intermediate (Cr, Al, Si)N layer was deposited in the argon-nitrogen environment using Cr and AlSi cathodes to provide interface adhesion [28]. The coating hardness was measured by AFM methods; it was 26 ± 6 GPa [32].…”

Section: Methodsmentioning

confidence: 99%

“…Friction induces graphitization of DLC surface layers [28][29][30]. The presence of sp 2type clusters should accelerate the graphitization process and affect the composition and properties of secondary structures formed on the friction surface.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of sp 2type clusters should accelerate the graphitization process and affect the composition and properties of secondary structures formed on the friction surface. In [28], only the effect of sp 3 -sp 2 transformation on wear was considered (the process occurs only with the carbon of the coating). Other elements (doping elements of the coating, counterpart elements [31]) can also affect the wear process.…”

Section: Introductionmentioning

confidence: 99%

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Secondary Structures on the Friction Surface of Diamond-like Coating

et al. 2022

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Peculiarities of the formation of secondary structures on the surface of a diamond-like coating are studied on the example of a friction contact between a steel ball and a diamond-like coating. The friction surface was examined in various areas; the zone of wear products (the boundary of the friction track) and the original surface outside the friction area. It is shown that secondary structures with a high content of iron, nickel, manganese, chromium, and oxygen are characteristic of areas with the highest wear resistance. Such secondary structures are formed because of the intense interaction of the diamond-like coating with the steel of the ball during dry friction.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Secondary Structures on the Friction Surface of Diamond-like Coating

et al. 2022

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“…Finally, a further way to increase tool life is the modification of the cutting tool surface, such as coating the cutting tool with a material that has high hardness properties [ 8 , 9 , 10 ]. Thus, the wide use of coatings such as TiN, TiCN, TiAlN, Al 2 O 3 and many others are examples of this approach [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Surface Texturing of Ceramic and Superhard Cutting Tools on the Machining Process—A Review

et al. 2022

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Machining is an indispensable manufacturing process for a wide range of engineering materials, such as metals, ceramics, and composite materials, in which the tool wear is a serious problem, which affects not only the costs and productivity but also the quality of the machined components. Thus, the modification of the cutting tool surface by application of textures on their surfaces is proposed as a very promising method for improving tool life. Surface texturing is a relatively new surface engineering technology, where microscale or nanoscale surface textures are generated on the cutting tool through a variety of techniques in order to improve tribological properties of cutting tool surfaces by reducing the coefficient of friction and increasing wear resistance. In this paper, the studies carried out to date on the texturing of ceramic and superhard cutting tools have been reviewed. Furthermore, the most common methods for creating textures on the surfaces of different materials have been summarized. Moreover, the parameters that are generally used in surface texturing, which should be indicated in all future studies of textured cutting tools in order to have a better understanding of its effects in the cutting process, are described. In addition, this paper proposes a way in which to classify the texture surfaces used in the cutting tools according to their geometric parameters. This paper highlights the effect of ceramic and superhard textured cutting tools in improving the machining performance of difficult-to-cut materials, such as coefficient of friction, tool wear, cutting forces, cutting temperature, and machined workpiece roughness. Finally, a conclusion of the analyzed papers is given.

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