Effect of copper addition on the temperature dependent reciprocating wear behaviour of CrN coatings

Ezirmik, Kadri Vefa; Şenel, Esat Can; Kazmanlı, Kürşat; Erdemir, Ali; Ürgen, Mustafa

doi:10.1016/j.surfcoat.2007.05.049

Cited by 35 publications

(25 citation statements)

References 18 publications

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“…In recent years, self-lubricating PVD tribological thin films have been intensively investigated [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Among these, PVD nanocomposite coatings containing soft metals (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Among these, PVD nanocomposite coatings containing soft metals (e.g. Ag or Cu), as a solid lubrication phase, embedded in a hard wear-resistant matrix, such as a transition metal nitride [2][3][4][6][7][8][9], carbide [10,13] or oxide [14][15][16], and mixtures of these ceramics (in ternary/quaternary/nanocomposite coating systems), have all been extensively studied, with the promise of improved tribological performance during transient and/or cyclic temperature changes [17][18][19]. In particular, coatings based on Cr-Ag-N [7,8,[17][18][19][20][21] and Cr-Cu-N [6,22,23] (as two typical coating systems), have been studied.…”

Section: Introductionmentioning

confidence: 99%

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CrCuAgN PVD nanocomposite coatings: Effects of annealing on coating morphology and nanostructure

Liu

Iamvasant

Liu

et al. 2017

Applied Surface Science

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CrCuAgN PVD nanocomposite coatings were produced using pulsed DC unbalanced magnetron sputtering. This investigation focuses on the effects of post-coat annealing on the surface morphology, phase composition and nanostructure of such coatings. In coatings with nitrogen contents up to 16 at.%, chromium exists as metallic Cr with N in supersaturated solid solution, even after 300 o C and 500 o C post-coat annealing.Annealing at 300 o C did not obviously change the phase composition of both nitrogen-free and nitrogen-containing coatings; however, 500 o C annealing resulted in significant transformation of the nitrogen-containing coatings. The formation of Ag aggregates relates to the (Cu+Ag)/Cr atomic ratio (threshold around 0.2), whereas the formation of Cu aggregates relates to the (Cu+Ag+N)/Cr atomic ratio (threshold around 0.5). The primary annealing-induced changes were reduced solubility of Cu, Ag and N in Cr, and the composition altering from a mixed ultra-fine nanocrystalline and partly amorphous phase constitution to a coarser, but still largely nanocrystalline structure. It was also found that, with sufficient Cu content (> 12 at.%), annealing at a moderately high temperature (e.g. 500 o C) leads to transportation of both Cu and Ag (even at relatively low concentrations of Ag, ≤ 3 at.%) from inside the coating to the coating surface, which resulted in significant reductions in friction coefficient, by over 50% compared to that of the substrate (from 0.31 to 0.14 with a hemispherical diamond indenter, and from 0.83 to 0.40 with an alumina ball counterface, respectively). Results indicate that the addition of both Cu and Ag (in appropriate *Manuscript Click here to view linked References 2 concentrations) to nitrogen-containing chromium is a viable strategy for the development of 'self-replenishing' silver-containing thin film architectures for temperature-dependent solid lubrication requirements or antimicrobial coating applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CrCuAgN PVD nanocomposite coatings: Effects of annealing on coating morphology and nanostructure

Liu

Iamvasant

Liu

et al. 2017

Applied Surface Science

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“…Ezirmik et al [14] studied Cu-Cr-N deposited using hybrid cathodic arc and magnetron sputtering PVD (CAPVD) technique. The main reflections in the XRD spectra were reported to be from c-CrN crystal lattice.…”

Section: Structurementioning

confidence: 99%

“…Ezirmik et al [14] investigated the tribological performance of Cu-Cr-N at room temperature, 50, 100 and 150°C. They found that maximum hardness (40 GPa) is achieved in coatings containing 4.4-at.% Cu; a further increase in the Cu content resulted in decrease in hardness.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Cu Content on the Structure, and Performance of Substoichiometric Cr–N Coatings

et al. 2010

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Cu-Cr-N coatings with Cu contents between 3 and 65 at.%, Cu/Cr ratios in the 0.04-4.5 range and 21-27 at.% N, synthesized by twin electron-beam Physical Vapor Deposition at 450°C, were investigated and compared against substoichiometric Cr-N reference samples. The main objective of this study is to study the influence of Cu on the structure, and the subsequent effects on the mechanical properties, room (22°C) and high temperature (500 and 840°C) tribological performance of Cu-Cr-N coatings. Using X-ray photoelectron spectroscopy, glancing angle X-ray diffraction and scanning electron microscopy, in combination with nanoindentation mechanical property measurements and laboratory-controlled ball-ondisc sliding experiments, it is shown that Cu-Cr-N coatings with low Cu content (3 at.%) possess sufficient wear resistance for high-temperature demanding tribological applications. The lubricious effect of oxide formation at high temperatures is also evaluated.

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Preparation and characterization of plasma Cu surface modified stainless steel

Zhang

Tang

Fan

et al. 2012

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Effect of copper addition on the temperature dependent reciprocating wear behaviour of CrN coatings

Cited by 35 publications

References 18 publications

CrCuAgN PVD nanocomposite coatings: Effects of annealing on coating morphology and nanostructure

CrCuAgN PVD nanocomposite coatings: Effects of annealing on coating morphology and nanostructure

Effect of Cu Content on the Structure, and Performance of Substoichiometric Cr–N Coatings

Preparation and characterization of plasma Cu surface modified stainless steel

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