Effect of periodicity on hardness and scratch resistance of CrN/NbN nanoscale multilayer coating deposited by cathodic arc technique

Araujo, Julia; Araujo, Gisela Marques; Souza, R.M.; Tschiptschin, André Paulo

doi:10.1016/j.wear.2015.01.051

Cited by 34 publications

(12 citation statements)

References 38 publications

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“…In recent years, the attention towards CrN/NbN multilayer coatings produced by physical vapour deposition (PVD) is growing rapidly due to their advanced barrier properties against corrosion and wear [1][2][3][4][5][6]. Moreover, use of the novel High Power Impulse Magnetron Sputtering (HIPIMS) deposition technique to deposit CrN/NbN coatings is found to be beneficial in improving those properties [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of substrate bias voltage on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN coatings

Biswas

Purandare

Khan

et al. 2018

Surface and Coatings Technology

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Substrate bias voltage is one of the most influential deposition parameter for physical vapour deposition processes as it can directly control the adatom mobility during coating growth. It influences the hardness, roughness as well as the microstructure of the coatings. Thus, bias voltage could also affect the defect formation during the coating deposition. High Power Impulse Magnetron Sputtering (HIPIMS) has been proven useful in producing void free and arc droplet free dense coatings. However, such coatings can still suffer from some defects associated with external factors (independent of deposition technique), such as substrate irregularities and the flakes coming from the chamber components. In order to study the effects of bias voltage (U b) on the defect formation during HIPIMS process, four sets of CrN/NbN coatings were deposited at U b =-40 V,-65 V,-100 V and-150 V. Microscopic studies revealed that with the increase in bias voltage the coatings morphology was altered and the percentage of surface area covered by optically visible defects was increased from 3.13 % to 4.30 %. The defects on the coatings deposited at U b =-100 V and-150 V led to preferential corrosive attack resulting in a sharp increase in corrosion current density during Potentiodynamic polarisation experiments. Room temperature pin-on-disc tribological tests exhibited the influence of defects on the wear behaviour; however, the coefficient of friction (µ) values were mainly influenced by the nature of the oxides formed during the tests. Coating microstructure and bilayer thickness, along with the coating defects determined the coefficient of wear (Kc) values. This study revealed that the coating deposited at U b =-65 V had the highest wear resistance (Kc = 2.68 × 10-15 m 3 N-1 m-1) and the lowest friction (µ = 0.48).

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Section: Introductionmentioning

confidence: 99%

Effect of substrate bias voltage on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN coatings

Biswas

Purandare

Khan

et al. 2018

Surface and Coatings Technology

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“…The challenge of choosing the optimal nanolayer thickness has been studied in a number of papers [15][16][17]19]. In particular, it has been revealed that the nanolayer thickness does not significantly influence the hardness of the coating, but affects the wear resistance and the coefficient of friction [20][21][22][23][24][25][26][27][28]. It has also been found that the plastic properties of the coatings with low nanolayer thickness are not associated with dislocation displacement [25], but are associated with the sliding along grain boundaries [21].…”

Section: Introductionmentioning

confidence: 99%

Influence of the nanolayer structure of coatings on the cutting properties of tools

Волосова¹,

Bublikov²,

Sotova³

et al. 2020

MATEC Web Conf.

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The paper is focused on the influence of the thickness of nanolayers in the Ti-TiN-(Ti,Cr,Al)N coating on the cutting properties of the tools during the turning of 09G2S silicon-manganese steel. Coatings with the nanolayer thicknesses of 302, 70, and 16 nm were considered. The conducted studies have revealed that a tool with a coating in which the nanolayer thickness is equal to 16 nm demonstrates the longest tool life. At the same time, for such tool, the wear pattern is more balanced, and signs of brittle fracture on the coating are less pronounced. The Ti-TiN- (Ti,Cr,Al)N coating with the nanolayer thickness of 16 nm provides an increase in the tool life by 3.5 times compared to an uncoated tool and by 1.3–1.5 times compared to the tools with the Ti-TiN-(Ti,Cr,Al)N coating with thicker nanolayers.

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“…Both the corrosion and tribological performances of CrN/NbN coatings (deposited by Arc or conventional magnetron sputtering techniques) have already been investigated [21,22,31,32]. The benefits of using HIPIMS over conventional PVD to deposit CrN/NbN have been also demonstrated [16,33,34].…”

Section: Introductionmentioning

confidence: 99%

Effect of chamber pressure on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN coatings

Biswas

Purandare

Sugumaran

et al. 2018

Surface and Coatings Technology

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Effect of periodicity on hardness and scratch resistance of CrN/NbN nanoscale multilayer coating deposited by cathodic arc technique

Cited by 34 publications

References 38 publications

Effect of substrate bias voltage on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN coatings

Effect of substrate bias voltage on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN coatings

Influence of the nanolayer structure of coatings on the cutting properties of tools

Effect of chamber pressure on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN coatings

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