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Updated: Jul 12, 2026

Synthesis and Microdiffraction at Extreme Pressures and Temperatures
Published on: October 7, 2013
Formation of Diamond by Explosive Shock
Explosive shocks transformed graphite into diamond. Researchers propose this occurred due to compression along the c-axis of graphite, creating a new diamond formation method.
Area of Science:
- Materials Science
- Solid State Physics
- Geochemistry
Background:
- Graphite, a carbon allotrope, is known for its layered structure.
- High-pressure, high-temperature (HPHT) conditions are typically required for synthetic diamond production.
- Understanding phase transitions in carbon materials is crucial for materials science.
Purpose of the Study:
- To investigate the possibility of diamond formation from graphite under explosive shock conditions.
- To elucidate the mechanism of diamond synthesis under extreme dynamic compression.
- To explore novel routes for carbon material transformation.
Main Methods:
- Samples of graphite were subjected to explosive shocks with an estimated intensity of 300,000 atmospheres.
- X-ray diffraction analysis was performed on the recovered graphite samples.
- Electron diffraction was utilized to examine the structural changes in the material.
Main Results:
- The presence of diamond was confirmed in the graphite samples post-shock.
- X-ray and electron diffraction patterns indicated the formation of diamond.
- No significant impurities or byproducts were noted in the diamond formation.
Conclusions:
- Diamond can be synthesized from graphite under intense explosive shock compression.
- The proposed mechanism involves the compression of graphite along its c-axis in the rhombohedral form.
- This study presents a novel method for diamond synthesis distinct from conventional HPHT techniques.
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