Technology Features of Diamond Coating Deposition on a Carbide Tool

Ashkinazi, E. E.; Fedorov, S. Yu.; Хомич, А. А.; Rogalin, V. E.; Bolshakov, A. P.; Sovyk, D. N.; Grigoriev, Sergey N.; Konov, V. I.

doi:10.3390/c8040077

Cited by 7 publications

(5 citation statements)

References 138 publications

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“…The controlled TM surface was chemically etched with Murakami and Karo reagents, and to prevent cobalt diffusion at the deposition temperature of the coating, a 600 nm thick layer of tungsten was applied via magnetron sputtering based on the schematic diagram of obtaining diamond films on WC-Co alloy [7].…”

Section: Methodsmentioning

confidence: 99%

“…The technology of applying polycrystalline diamond coatings is quite complex, multistage, and has some technological features [7][8][9][10]. The most common method of applying DC to tungsten carbide-based hard alloys (WC-Co) is gas phase CVD deposition [11], more often using the hot filament chemical vapors deposition method (HF CVD) [12] or, less frequently, the microwave plasma chemical vapors deposition method (MP CVD); however, this provides a higher growth rate and film quality compared to HF CVD.…”

Section: Introductionmentioning

confidence: 99%

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Evolution of the Growth of a Micro-Nano Crystalline Diamond Film on an Axial Carbide Tool Model in Microwave Plasma

et al. 2023

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Conformal multilayer micro-nanocrystalline diamond coatings were grown on substrates of a hard alloy with 9% Co with a high aspect number in microwave plasma from gas mixtures CH4/H2 and CH4/H2/N2. The substrates were of a cylindrical axial tool model with a size ratio: d = 12 mm to l = 75 mm. An original tool holder made of molybdenum, in the form of a sector of the excessive ring with the axis of the hole parallel to the central conductive platform, protects part of the substrate from heating due to the edge effect of plasma. The uniformity of heating of the growth part, which is located inside the excessive ring, is calculated using mathematical modeling and is provided by rotation at a speed of at least 12 rpm, which ensures the uniformity of the coating. The average grain size of the nanocrystalline film measured along the cylinder forming was 41 nm.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evolution of the Growth of a Micro-Nano Crystalline Diamond Film on an Axial Carbide Tool Model in Microwave Plasma

et al. 2023

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“…This subsequently reduces the machined surface’s quality and the shape’s accuracy. This is why the industry strives to improve diamond-cutting machines’ quality and efficiency [ 32 , 33 , 34 ], or are even applied to carbide tools [ 35 ].…”

Section: Introductionmentioning

confidence: 99%

High-Energy Excimer Annealing of Nanodiamond Layers

et al. 2023

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Here, we aimed to achieve exposure of a nanodiamond layer to a high-energy excimer laser. The treatment was realized in high-vacuum conditions. The carbon, in the form of nanodiamonds (NDs), underwent high-temperature changes. The induced changes in carbon form were studied with Raman spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction (XRD) and we searched for the Q-carbon phase in the prepared structure. Surface morphology changes were detected by atomic force microscopy (AFM) and scanning electron microscopy (SEM). NDs were exposed to different laser energy values, from 1600 to 3000 mJ cm−2. Using the AFM and SEM methods, we found that the NDs layer was disrupted with increasing beam energy, to create a fibrous structure resembling Q-carbon fibers. Layered micro-/nano-spheres, representing the role of diamonds, were created at the junction of the fibers. A Q-carbon structure (fibers) consisting of 80% sp3 hybridization was prepared by melting and quenching the nanodiamond film. Higher energy values of the laser beam (2000 and 3000 mJ cm−2), in addition to oxygen bonds, also induced carbide bonds characteristic of Q-carbon. Raman spectroscopy confirmed the presence of a diamond (sp3) phase and a low-intensity graphitic (G) peak occurring in the Q-carbon form samples.

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“…One of the ways to increase the wear resistance of traditional carbide tools is to apply carbon-based reinforcing coatings, in particular, diamond-like (DLC) [18,19] or PCD [20], to the cutting wedge. Such a tool shows the lowest level of wear, although sometimes it does not provide the best roughness.…”

Section: Introductionmentioning

confidence: 99%

Wear of Carbide Plates with Diamond-like and Micro-Nano Polycrystalline Diamond Coatings during Interrupted Cutting of Composite Alloy Al/SiC

Ashkinazi,

Fedorov,

Martyanov

et al. 2023

JMMP

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The complexity of milling metal matrix composite alloys based on aluminum like Al/SiC is due to their low melting point and high abrasive ability, which causes increased wear of carbide tools. One of the effective ways to improve its reliability and service life is to modify the surface by plasma chemical deposition of carbon-based multilayer functional layers from vapor (CVD) with high hardness and thermal conductivity: diamond-like (DLC) or polycrystalline diamond (PCD) coatings. Experiments on an indexable mill with CoroMill 200 inserts have shown that initial tool life increases up to 100% for cases with DLC and up to 300% for multilayered MCD/NCD films at a cutting speed of 800 m/min. The primary mechanism of wear of a carbide tool in this cutting mode was soft abrasion, when wear on both the rake and flank surfaces occurred due to the extrusion of cobalt binder between tungsten carbide grains, followed by their loss. Analysis of the wear pattern of plates with DLC and MCD/NCD coatings showed that abrasive wear begins to prevail against the background of soft abrasion. Adhesive wear is also present to a lesser extent, but there is no chipping of the base material from the cutting edge.

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Technology Features of Diamond Coating Deposition on a Carbide Tool

Cited by 7 publications

References 138 publications

Evolution of the Growth of a Micro-Nano Crystalline Diamond Film on an Axial Carbide Tool Model in Microwave Plasma

Evolution of the Growth of a Micro-Nano Crystalline Diamond Film on an Axial Carbide Tool Model in Microwave Plasma

High-Energy Excimer Annealing of Nanodiamond Layers

Wear of Carbide Plates with Diamond-like and Micro-Nano Polycrystalline Diamond Coatings during Interrupted Cutting of Composite Alloy Al/SiC

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