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Laser additive manufacturing bulk graphene-copper nanocomposites
Zengrong Hu1,2,3, Feng Chen2, Dong Lin4
1School of Urban Rail Transportation, Soochow University, Suzhou, Jiangsu, People's Republic of China, 215131.
Nanotechnology
|August 31, 2017
Summary
Graphene-copper nanocomposites fabricated using laser additive manufacturing show significantly enhanced mechanical properties. This new method offers stronger, high-performance materials for electrical and thermal applications.
Area of Science:
- Materials Science
- Nanotechnology
- Additive Manufacturing
Background:
- Graphene's exceptional mechanical properties make it a suitable nanofiller for metal matrix composites (MMCs).
- Laser additive manufacturing offers a novel approach for fabricating advanced nanocomposites.
Purpose of the Study:
- To fabricate graphene-copper (Gr-Cu) nanocomposites using laser additive manufacturing.
- To characterize the microstructure and mechanical properties of the fabricated Gr-Cu nanocomposites.
- To evaluate the potential of this method for creating high-performance materials.
Main Methods:
- Fabrication of Gr-Cu nanocomposites via laser additive manufacturing.
- Characterization using Transmission Electron Microscopy (TEM), X-ray Diffraction (XRD), and Raman Spectroscopy.
- Mechanical property evaluation through nanoindentation tests.
Main Results:
- Successful fabrication of Gr-Cu nanocomposites demonstrated by XRD, Raman, EDS, and TEM.
- High-resolution TEM revealed the interface between the copper matrix and graphene.
- Nanoindentation showed a 17.6% increase in average modulus (118.9 GPa) and a 50% increase in hardness (3 GPa) compared to pure copper.
Conclusions:
- Laser additive manufacturing is a feasible method for producing Gr-Cu nanocomposites.
- The addition of graphene significantly enhances the mechanical properties of copper.
- This technique provides a new pathway for manufacturing ultra-strong graphene-copper nanocomposites for demanding applications.
