2019 MRS Spring Meeting & Exhibit

Symposium CP05-Materials Evolution in Dry Friction—Microstructural, Chemical and Environmental Effects

Dry friction is governed by microstructure, surface topography and chemical composition of the two materials in sliding contact. The initial state of the materials, adsorbates from the environment as well as mechanical and thermal load history determine the steady state properties of the resulting tribomaterial layers in the vicinity of the sliding interface. Recent progress in high resolution materials characterization (XPS, AES, FIB-TEM, TOF-SIMS, EFTEM, APT) in combination with more materials realism in atomistic and mesoscale tribosimulation (large scale quantum molecular dynamics, reliable force fields, discrete dislocation dynamics) results in essential new insights into the evolution of metals, ceramics, polymers and macromolecular materials subject to dry friction conditions. This renewed materials science-based approach to tribology has for example revealed the very early stages of dislocation self-organization as well as how dislocation mediated plastic flow is responsible for mechanical mixing and fold formation. The field also focuses on 2D materials and how they can be applied to achieve macroscale superlubricity as well as the influence of the chemical properties of the last few nanometers of the contacting materials, including the tribochemistry of adsorbates.

This symposium will join experimentalists and modelers to provide a complementary view on tribo-induced material modifications that will allow for an improved understanding and control of dry friction and boundary lubricated systems.

Topics will include:

  • Initiation of structural changes underneath sliding surfaces
  • Evolution of nano- and microstructure in tribomaterials
  • Environmental effects and chemical changes in and on tribomaterials
  • Running-in effects and tribo preconditioning
  • Numerical models for structural evolution in tribomaterials
  • High resolution microscopy of material evolution in single asperity collisions
  • Material aspects of ultralow friction
  • Controlled friction with minimal wear
  • Solid lubricants and transfer film formation
  • Tribochemistry in coatings and adsorbed layers

Invited Speakers:

  • Nicolas Argibay (Sandia National Laboratories, USA)
  • Robert Carpick (University of Pennsylvania, USA)
  • Richard Chromik (McGill University, Canada)
  • Maria-Isabel De Barros Bouchet (Ecole Centrale de Lyon, France)
  • Martin Dienwiebel (Microtribology Center µTC, Germany)
  • Peter Gumbsch (Fraunhofer IWM, Germany)
  • Tevis Jacobs (University of Pittsburgh, USA)
  • Momoji Kubo (Tohoku University, Japan)
  • Laurie Marks (Northwestern University, USA)
  • Angela Pitenis (University of California, Santa Barbara, USA)
  • Maria Clelia Righi (University of Modena, Italy)
  • Izabela Szlufarska (University of Wisconsin-Madison, USA)

Symposium Organizers

Christian Greiner
Karlsruhe Institute of Technology
Institute for Applied Materials

Koshi Adachi
Tohoku University
Department of Mechanical Systems Engineering

Judith Harrison
U.S. Naval Academy

Michael Moseler
Fraunhofer Institute for Mechanics of Materials IWM

Publishing Alliance

MRS publishes with Springer Nature