Friction and wear of coated surfaces — scales, modelling and simulation of tribomechanisms

Holmberg, Kenneth; Ronkainen, Helena; Laukkanen, Anssi; Wallin, Kim

doi:10.1016/j.surfcoat.2007.07.105

Cited by 182 publications

(116 citation statements)

References 27 publications

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“…7a) is abrasion; at the edges of the track the material is plastically deformed in CoNiCrAlY coating (Fig. 7c), this behavior at room temperatures is common in metallic materials [22]. At high temperature, it appears that the primary mode of damage is abrasion for the NiCoCrAlY coating.…”

Section: Friction and Wear Behaviormentioning

confidence: 91%

Tribology and high temperature friction wear behavior of MCrAlY laser cladding coatings on stainless steel

Pereira

Zambrano

Licausi

et al. 2015

Wear

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Temperature can have a significant effect on the extent of wear damage of metallic components. Thermal barrier coatings can improve the high temperature tribological and friction wear behavior. In this work the dry friction and wear behavior at low and high temperature of NiCoCrAlY and CoNiCrAlY laser cladding coatings were evaluated, as well as for the austenitic stainless steel AISI 304 used as substrate. Dense coatings, with good bonding to the substrate was obtained by coaxial laser cladding tracks (40% overlapping), with previously optimized laser parameters. Tribological wear tests were performed by sliding wear at room temperature and 500 1C, with an Al2O3 ball on disk configuration tribometer. The wear scar surface was evaluated by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) microanalysis. The 3D topography of the wear track was determined by inductive contact profilometer which enabled the wear rate calculation. The microstructure of the coatings consists of γNi/β-NiAl or γCo/β-(Co,Ni)Al phases depending on the chemical composition of the alloy, as confirmed by X-ray diffraction (XRD) analysis. The wear test results show a reduction in wear rate at high temperature for all materials tested. For the NiCoCrAlY coating, the high temperature also reduces the friction coefficient, while it significantly increases the friction coefficient of CoNiCrAlY coating. The main damage mode is abrasion and adhesion, caused by the oxide and partially-oxidized particles in the contact surface. The coatings and substrate results were compared, resulting in an improved wear behavior.

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Section: Friction and Wear Behaviormentioning

confidence: 91%

Tribology and high temperature friction wear behavior of MCrAlY laser cladding coatings on stainless steel

Pereira

Zambrano

Licausi

et al. 2015

Wear

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“…Stretching of the long molecules is a major origin of friction especially for elastomers [32,37], synthetic polymers [68] and various protein films [35,36]. Plowing [69] and dragging protein chains on the surface [70] can also increase the frictional force.…”

Section: Discussionmentioning

confidence: 99%

Direct Observation of Amyloid Nucleation under Nanomechanical Stretching

et al. 2013

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Self-assembly of amyloid nanofiber is associated with functional and pathological processes such as in neurodegenerative diseases. Despite intensive studies, stochastic nature of the process has made it difficult to elucidate molecular mechanisms for the key amyloid nucleation. Here, we investigated the amyloid nucleation of silk-elastinlike peptide (SELP) using time-lapse lateral force microscopy (LFM). By repeated scanning a single line on a SELP-coated mica surface, we observed sudden stepwise height increases, corresponds to nucleation of an amyloid fiber. The lateral force profiles followed either a worm-like chain model or an exponential function, suggesting that the atomic force microscopy (AFM) tip stretches a single or multiple SELP molecules along the scanning direction, serves as the template for further selfassembly perpendicular to the scan direction. Such mechanically induced nucleation of amyloid fibrils allows positional and directional control of amyloid assembly in vitro, which we demonstrate by generating single nanofibers at predetermined nucleation sites.

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“…The wear rates of the coating and ball have been calculated according to the following equation [6]:…”

Section: Tribological Investigations Of Mos 2 Tiwmentioning

confidence: 99%

Low friction MoS₂TiW coatings manufactured on X38CrMoV5‐1 steel using PVD method

Gołąbczak¹,

Jacquet

Nouveau

et al. 2013

Materialwissenschaft Werkst

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. In this article the friction coefficients and the wear resistances of MoS 2 TiW protective coatings manufactured on X38CrMoV5-1 steel samples by using PVD technology are studied. The investigations based on tribometer tests which were carried out in different temperature conditions. The process of deposition of PVD coatings was realized by using multisource, hybrid factoryscale equipment of type URM 079. This equipment allows for deposition of coatings by the physical method. The tribological tests were performed using a precision high temperature tribometer under ambient and high temperature conditions with a steel and corundum balls as counter-samples. In this paper the results of these tribological tests are presented. It is shown that the measured friction coefficient of steel samples with PVD coatings is significantly lower than the friction coefficient of uncoated steel. It is also shown that X38CrMoV5-1 steel samples with manufactured MoS 2 TiW coatings are characterized by very low friction coefficient and high wear resistance.

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Friction and wear of coated surfaces — scales, modelling and simulation of tribomechanisms

Cited by 182 publications

References 27 publications

Tribology and high temperature friction wear behavior of MCrAlY laser cladding coatings on stainless steel

Tribology and high temperature friction wear behavior of MCrAlY laser cladding coatings on stainless steel

Direct Observation of Amyloid Nucleation under Nanomechanical Stretching

Low friction MoS₂TiW coatings manufactured on X38CrMoV5‐1 steel using PVD method

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Friction and wear of coated surfaces — scales, modelling and simulation of tribomechanisms

Cited by 182 publications

References 27 publications

Tribology and high temperature friction wear behavior of MCrAlY laser cladding coatings on stainless steel

Tribology and high temperature friction wear behavior of MCrAlY laser cladding coatings on stainless steel

Direct Observation of Amyloid Nucleation under Nanomechanical Stretching

Low friction MoS2TiW coatings manufactured on X38CrMoV5‐1 steel using PVD method

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Product

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Low friction MoS₂TiW coatings manufactured on X38CrMoV5‐1 steel using PVD method