Bulk Amorphous Carbon with Lightweight, High Strength, and Electrical Conductivity: Onion-Like Carbon Structures...

Area of Science:

• Materials Science
• Nanotechnology
• Solid State Physics

Background:

• Amorphous carbon's unique structure offers advantages over crystalline forms for advanced technologies.
• Developing novel bulk amorphous carbon materials is essential for expanding technological applications.
• Innovative synthesis methods are key to creating these advanced materials.

Purpose of the Study:

• To synthesize bulk amorphous carbon materials with enhanced properties.
• To investigate the structural and property relationships of the synthesized materials.
• To explore the potential applications of the novel amorphous carbon.

Main Methods:

• Spark plasma sintering (SPS) of carbon black.
• Synthesis at high temperatures (1700–2200 °C) and pressure (50 MPa).
• Characterization of structural, mechanical, and electrical properties.

Main Results:

• Successfully synthesized bulk amorphous carbon with onion-like structures in disordered graphene networks.
• The material exhibits low density combined with exceptional mechanical properties (e.g., hardness of 603 MPa at 2200 °C).
• Achieved excellent electrical conductivity of 9.3 × 10^3 S/m, comparable to commercial graphite.

Conclusions:

• The synthesized bulk amorphous carbon possesses a unique combination of desirable properties.
• This material shows significant promise for applications in aerospace, energy storage, electronics, and precision manufacturing.
• The SPS method provides an effective route for producing advanced amorphous carbon materials.