Multilayer PVD coatings for wear protection

Holleck, H.; Schier, V.

doi:10.1016/0257-8972(95)02555-3

Cited by 462 publications

(148 citation statements)

References 13 publications

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“…In particular, metal-ceramic multilayers show an attractive combination of electrical [3,4], magnetic [5][6][7], optical [8][9][10] and mechanical [11] properties, which are appealing for a number of engineering applications. For instance, metal-ceramic nanolaminates offer a good combination of hardness and toughness, leading to excellent wear resistance for protective coatings [11,12]. In electronic applications, metal (Cu, Al (-ceramic (Si0 2 , CDO ) multilayers have been widely used in advanced packaging technology for more than 30 years.…”

Section: Introductionmentioning

confidence: 99%

High temperature micropillar compression of Al/SiC nanolaminates

et al. 2013

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The effect of the temperature on the compressive stress-strain behavior of Al/SiC nanoscale multilayers was studied by means of micropillar compression tests at 23 °C and 100 °C. The multilayers (composed of alternating layers of 60 nm in thickness of nanocrystalline A1 and amorphous SiC) showed a very large hardening rate at 23 °C, which led to a flow stress of 3.1 ± 0.2 GPa at 8% strain. However, the flow stress (and the hardening rate) was reduced by 50% at 100 °C. Plastic deformation of the A1 layers was the dominant deformation mechanism at both temperatures, but the A1 layers were extruded out of the micropillar at 100 °C, while A1 plastic flow was constrained by the SiC elastic layers at 23 °C. Finite element simulations of the micropillar compression test indicated the role played by different factors (flow stress of Al, interface strength and friction coefficient) on the mechanical behavior and were able to rationalize the differences in the stress-strain curves between 23 °C and 100 °C.

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Section: Introductionmentioning

confidence: 99%

High temperature micropillar compression of Al/SiC nanolaminates

et al. 2013

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“…6, due to anisotropic growth conditions. For many applications, this is used advantageously to create multilayers [7], where the large number of interfaces contributes to enhanced mechanical properties [8]. However, in most cases, the layering is unintentional and not even recognized.…”

Section: Introductionmentioning

confidence: 99%

Layer formation by resputtering in Ti–Si–C hard coatings during large scale cathodic arc deposition

Eriksson

Zhu

Ghafoor

et al. 2011

Surface and Coatings Technology

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This paper presents the physical mechanism behind the phenomenon of self-layering in thin films made by industrial scale cathodic arc deposition systems using compound Ti-Si-C cathodes and rotating substrate fixture. For the as-deposited films, electron microscopy and energy dispersive X-ray spectrometry reveals a trapezoid modulation in Si content in the substrate normal direction, with a period of 4 to 23 nm dependent on cathode configuration. This is caused by preferential resputtering of Si by the energetic deposition flux incident at high incidence angles, when the substrates are facing away from the cathodes. The Ti-rich sub-layers exhibit TiC grains with sizes up to 5 nm, while layers with high Si-content are less crystalline. The nanoindentation hardness of the films increases with decreasing layer thickness.

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“…Multilayer coatings have a wide range of applications being used as X-ray mirrors, monochromators, corrosion and erosion protections and diffusion barriers [1±5]. More recently, multilayer coatings have been used for mechanical application, namely to improve the wear resistance of coated components [3,6,7]. It seems that the wear resistance results from a speci®c favourable combination of hardness and toughness, which is dif®cult to obtain with a single coating [8].…”

Section: Introductionmentioning

confidence: 99%

The influence of ductile interlayers on the mechanical performance of tungsten nitride coatings

Vieira¹,

Ramos²

1999

Journal of Materials Processing Technology

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Multilayers between ceramic materials and metallic materials can combine the high hardness and wear resistance of the ceramic layers with the toughness and mechanical strength of the metallic layers. This work is aimed at the production and characterisation of tungsten nitride/titanium (or nickel) multilayers. The coatings, deposited by magnetron sputtering, are characterised with respect to their structure, morphology and hardness. The adhesion to the substrate is evaluated by a scratch-test technique, as it constitutes a fundamental prerequisite.The choice of titanium and nickel as interlayering materials was made in order to study the role of materials with elevated plasticity, but with different reactivities. Titanium tends to react chemically with other materials, namely, ferrous oxides and nitrides. Nickel has low chemical reactivity but has the same crystallographic structure as the W 2 N phase. All of the multilayer coatings produced have a total thickness of 4 mm. The hardness of the multilayers, deposited with different ceramic/metal thickness ratios, decreases with the thickness of the ductile metallic layers. When the metal thickness is too high it causes the spalling of the coatings. The optimal medium critical load (65 N) is obtained with a ceramic/metal ratio equal to four. Even though the type of bond is different, the adhesion of the multilayers is not in¯uenced by the substitution of titanium with nickel. The deposition process yields well-adhered and suf®ciently hard multilayer coatings when compared with the ceramic single layers. #

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Multilayer PVD coatings for wear protection

Cited by 462 publications

References 13 publications

High temperature micropillar compression of Al/SiC nanolaminates

High temperature micropillar compression of Al/SiC nanolaminates

Layer formation by resputtering in Ti–Si–C hard coatings during large scale cathodic arc deposition

The influence of ductile interlayers on the mechanical performance of tungsten nitride coatings

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