Boosting contact sliding and wear protection via atomic intermixing and tailoring of nanoscale interfaces

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Atomistic simulations performed with a family of model potential with tunable hardness have proven to be a great tool for advancing the understanding of wear processes at the asperity level. They have been instrumental in finding a critical length scale, w ...

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We develop an analytical model of adhesive wear between two unlubricated rough surfaces, forming micro-contacts under normal load. The model is based on an energy balance and a crack initiation criteria. We apply the model to the problem of self-affine rou ...

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Ternary-based titanium nitride (TiN) thin films have drawn attention toward rational applications due to their wear resistance, high hardness, and corrosion resistance. The influence of Mo content on the structural, tribo-logical, and mechanical properties ...

In order to develop predictive wear laws, relevant material parameters and their influence on the wear rate need to be identified. Despite decades of research, there is no agreement on the mathematical form of wear equations and even the simplest models, s ...

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This study presents an improvement of an existing tribocorrosion model developed for passive CoCrMo alloys. This model is based on an empirical formalism established by Duncan Dowson in his pioneering works on the relation between wear and elasto-hydrodyna ...

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Frictional contacts lead to the formation of a surface layer called the third body, consisting of wear particles and structures resulting from their agglomerates. Its behavior and properties at the nanoscale control the macroscopic tribological performance ...

When two solids start rubbing together, frictional sliding initiates in the wake of slip fronts propagating along their surfaces in contact. This macroscopic rupture dynamics can be successfully mapped on the elastodynamics of a moving shear crack. However ...

Friction and wear occur at every interface between solid materials. In the design of mechanical devices, it is desirable to be able to quantify and control the amount of friction and wear, as well as predict their evolution with time. ``Tribology'' is the ...

Skyrmions have been well studied in chiral magnets and magnetic thin films due to their potential application in practical devices. Recently, monochiral skyrmions have been observed in twodimensional van der Waals magnets. Their atomically flat surfaces an ...

All mechanical systems, naturally occurring or human-produced, are subjected to friction and wear at the interface of solid constituents. Large portions of energy dissipation and loss of material, in every-day life and industrial applications alike, are du ...

Mechanical watches are complex and sensitive systems that have to maintain a faultless precision over their lifetime. However, this precision can be altered by disturbances occurring during the functioning time, such as friction, lubricant drying, or wear, ...

When two rough surfaces slide against each other, two main behaviors can be observed at the asperity level: A ductile behavior where the asperities tend to smooth out or a brittle behavior where the asperities detach and form debris. Recently, a critical l ...

Digital data storage is a growing need for our society and finding alternative solutions than those based on silicon or magnetic tapes is a challenge in the era of “big data.” The recent development of polymers that can store information at the molecular l ...

Boosting contact sliding and wear protection via atomic intermixing and tailoring of nanoscale interfaces

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A downsized laser powder bed fusion device for operando neutron studies: design and experiments

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A story of two transitions: From adhesive to abrasive wear and from ductile to brittle regime

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Operando analysis of a solid oxide fuel cell by environmental transmission electron microscopy

Adhesive wear regimes on rough surfaces and interaction of micro-contacts

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Effect of Mo addition on the mechanical and tribological properties of magnetron sputtered TiN films

A parameter-free mechanistic model of the adhesive wear process of rough surfaces in sliding contact

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A lubricated tribocorrosion model incorporating surface roughness

Dynamic Nuclear Polarization Enables NMR of Surface Passivating Agents on Hybrid Perovskite Thin Films

Effect of wear particles and roughness on nanoscale friction

Onset of sliding across scales: How the contact topography impacts frictional strength

Modeling the origins of adhesive wear across scales

Single Skyrmion Generation via a Vertical Nanocontact in a 2D Magnet-Based Heterostructure

Bridging scales in wear modeling with volume integral methods for elastic-plastic contact

Tribological Approach to the Watch Movements

Understanding the mechanisms of adhesive wear for heterogeneous materials through atomistic simulations

Aerolysin nanopores decode digital information stored in tailored macromolecular analytes