Background

Electrical contacts endure high-temperature arc bombardment during high-current switching, causing surface erosion, melting, and splashing. Understanding arc erosion mechanisms at the microscale is key to extending contact lifespan.

Research Focus

Graphene-Enhanced Arc Erosion Resistance

Introducing graphene into conventional W-Cu contact materials to study its effect on arc erosion behavior:

  • Graphene's high thermal conductivity effectively disperses arc heat
  • Layered structure blocks metal atom diffusion under arc bombardment

Molecular Dynamics (MD) Simulation

Using MD simulation to reveal arc erosion mechanisms at the atomic scale:

  • Constructing atomic models of W-Cu/graphene composite systems
  • Simulating atomic diffusion behavior under various temperature fields
  • Validating graphene's diffusion-blocking effect

Representative Papers

  1. Investigation on arc erosion behaviors and mechanism of W70Cu30 electrical contact materials adding graphene. J. Alloys Compd., 2017