Wear behaviour of PVD coating strengthened WC-Co cutters during milling of oak-wood

Kazlauskas, Deividas; Jankauskas, Vytenis; Kreivaitis, Raimondas; Tučkutė, Simona

doi:10.1016/j.wear.2022.204336

Cited by 15 publications

(14 citation statements)

References 23 publications

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“…The recovery of tungsten and cobalt concentrations between 6000 and 9000 m working distance indicates a change in the tungsten carbide grains on the surface. This is confirmed by the observed increase in surface roughness of the cutting edges as the weakly cobalt-bound tungsten carbide grains break away [35]. The significant decrease in oxygen content (1.28%) in this operating range indicates that the deep layers of the carbide were 'opened' by abrasion but not oxidized [35].…”

Section: Investigation Of the Effect Of Corrosion On Wc-co And Hard C...supporting

confidence: 52%

“…This is confirmed by the observed increase in surface roughness of the cutting edges as the weakly cobalt-bound tungsten carbide grains break away [35]. The significant decrease in oxygen content (1.28%) in this operating range indicates that the deep layers of the carbide were 'opened' by abrasion but not oxidized [35]. 9000 m is the limit of the quality performance of the tool: the surface layers of the WC grains have changed, the accuracy of the cutting edge deteriorates, the roughness of the tool increases, leading to an increase in the roughness of the surface to be machined, the energy required for machining increases and the tool heat increases.…”

Section: Investigation Of the Effect Of Corrosion On Wc-co And Hard C...mentioning

confidence: 53%

“…Registration of hard-metal WC-Co peaks in XRD spectra in the presence of PVD coatings confirms the micrometric thickness of the coatings. Characteristic peaks in the spectra of PVD-coated cutters at 2Θ angles: CrN (37.73° and 44.23°); AlCrN: (AlN-37.95°, 43.95°, 63.9° and CrN-44.16°); AlTiN (37.22°, 43.23°, 62.75°); TiAlN (37.40°, 43.41°; 62.95°); TiCN (36.71°, 42.76°, 61.82°) [35].…”

Section: Resultsmentioning

confidence: 99%

“…Average microhardness of PVD Coatings, GPa: AlCrN-27.6 ± 3 GPa, AlTiN-29,8 ± 3, TiAlN-30,8 ± 4, TiCN-31,3 ± 3, CrN-19,4 ± 2 [35].…”

Section: Methodsmentioning

confidence: 99%

“…Structural composition of the hard-metal cutters and their coatings measured by XRD on a Bruker D8 spectrometer with Cu Kα X-ray tube [35].…”

Section: Methodsmentioning

confidence: 99%

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Investigation of the Corrosion and Tribological Properties of WC-Co Tools Hardened with PVD Coatings in Solid Oak Wood Processing

Kazlauskas,

Jankauskas,

Antonov

2024

Coatings

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Corrosion and friction coefficient tests were performed on solid oak wood machined with hard-metal woodworking tools coated with PVD coatings (AlCrN, AlTiN, TiAlN, TiCN and CrN). The tannic acid attacks the carbide more intensively than the PVD coatings. During cutting, corrosion spreads on the cutting edge of the cutter due to mechanical action, which dissolves the cobalt binder of the hard-metal and causes the carbide grains to flake off. After 80 min of contact with the wood, the cobalt content decreases from 3.53 to 1.74%. Depending on the PVD coating material, cracks of 4 to 40 µm in width appear after 120 min (9000 m cutting path). After 120 min of machining, wear, corrosion effects and the influence of corrosion on the coefficients of friction were evaluated for tools with and without PVD coatings. TiCN is the most sensitive to corrosion, while AlCrN and CrN coatings are the least sensitive, with the AlTiN coating being the most affected under real cutting conditions (with mechanical + thermal + corrosion effects) and the tools with CrN and AlCrN coatings being the least affected. Corrosion affects the hard-metal and PVD coatings and reduces the coefficient of friction. The angle between the directions of sliding and sharpening of the cutting edge sharpening significantly influences this parameter. The coefficient of friction of hard-metal WC-Co and PVD coatings is higher in the parallel machining direction than in the perpendicular machining direction and ranges from 16.03% (WC-Co) to 44.8% (AlTiN). The coefficient of friction of hard-metal WC-Co decreases by 5.13% before and after exposure to tannic acid, while the corrosion of PVD coatings reduces it by 4.13% (CrN) to 26.7% (TiAlN).

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Section: Investigation Of the Effect Of Corrosion On Wc-co And Hard C...supporting

confidence: 52%

Section: Investigation Of the Effect Of Corrosion On Wc-co And Hard C...mentioning

confidence: 53%

Section: Resultsmentioning

confidence: 99%

“…Average microhardness of PVD Coatings, GPa: AlCrN-27.6 ± 3 GPa, AlTiN-29,8 ± 3, TiAlN-30,8 ± 4, TiCN-31,3 ± 3, CrN-19,4 ± 2 [35].…”

Section: Methodsmentioning

confidence: 99%

“…Structural composition of the hard-metal cutters and their coatings measured by XRD on a Bruker D8 spectrometer with Cu Kα X-ray tube [35].…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Investigation of the Corrosion and Tribological Properties of WC-Co Tools Hardened with PVD Coatings in Solid Oak Wood Processing

Kazlauskas,

Jankauskas,

Antonov

2024

Coatings

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Effect of contact stiffness on cutter flank friction and wear in milling process considering cutting vibration

Zhao

Song

Jiang

et al. 2023

Int J Adv Manuf Technol

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Effect of the GLC Coating Thickness on the Mechanical and Tribological Properties of the CrN/GLC Coatings

et al. 2023

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Wear behaviour of PVD coating strengthened WC-Co cutters during milling of oak-wood

Cited by 15 publications

References 23 publications

Investigation of the Corrosion and Tribological Properties of WC-Co Tools Hardened with PVD Coatings in Solid Oak Wood Processing

Investigation of the Corrosion and Tribological Properties of WC-Co Tools Hardened with PVD Coatings in Solid Oak Wood Processing

Effect of contact stiffness on cutter flank friction and wear in milling process considering cutting vibration

Effect of the GLC Coating Thickness on the Mechanical and Tribological Properties of the CrN/GLC Coatings

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