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  11. Binder Assisted Graphene Derivatives As Lubricants In Copper: Improved Tribological Performance For Industrial Application.
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  9. Wearable Materials
  11. Binder Assisted Graphene Derivatives As Lubricants In Copper: Improved Tribological Performance For Industrial Application.

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Binder assisted graphene derivatives as lubricants in copper: Improved tribological performance for industrial application.

Changjie Huang1, Su Zhao2, Ruiqi Chen1

  • 1Department of Industrial and Materials Science, Chalmers University of Technology, 41296 Göteborg, Sweden.

Iscience
|April 2, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Graphene derivatives like graphene nanoplatelets (GNP) enhance copper

Keywords:
Materials applicationMaterials chemistry

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Area of Science:

  • Materials Science
  • Tribology
  • Nanotechnology

Background:

  • Graphene, derived from graphite, is a promising anti-wear and friction-reducing additive for metal matrices.
  • Investigating graphene derivatives (graphene oxide [GO], reduced graphene oxide [RGO], graphene nanoplatelet [GNP]) in copper (Cu) matrices is crucial for industrial applications.
  • Addressing graphene aggregation and improving interaction with metal particles requires effective binding strategies.

Purpose of the Study:

  • To evaluate the tribological performance of GO, RGO, and GNP as additives in a Cu matrix from an industrial viewpoint.
  • To assess the efficacy of polyvinyl alcohol (PVA) and cellulose nanocrystals (CNC) as binders for uniform graphene dispersion in Cu.
  • To determine the impact of preserved and well-distributed graphene on the wear and friction properties of the Cu matrix after sintering.

Main Methods:

  • Incorporation of three graphene derivatives (GO, RGO, GNP) into a Cu matrix using PVA and CNC binders.
  • High-temperature sintering to preserve graphene structure and ensure uniform distribution up to 5 wt% graphene loading.
  • Tribological testing to analyze friction coefficient and wear behavior of the composite materials.

Main Results:

  • Uniform distribution of graphene derivatives within the Cu matrix was achieved using PVA and CNC binders.
  • Graphene additives were successfully preserved and remained well-distributed after high-temperature sintering.
  • The graphene nanoplatelet (GNP)-containing Cu composite exhibited the most stable friction coefficient.
  • Both graphene oxide (GO) and reduced graphene oxide (RGO) also demonstrated improvements in tribological performance under various conditions.

Conclusions:

  • The use of binders like PVA and CNC effectively facilitates uniform dispersion and preservation of graphene derivatives in Cu matrices.
  • Graphene nanoplatelets (GNP) offer superior friction coefficient stability in copper composites.
  • Graphene oxide (GO) and reduced graphene oxide (RGO) also provide significant tribological benefits for copper, broadening their applicability.