ISSN:
1551-2916
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
In order to investigate the catalytic effect of MnCO3, a typical transition-metal carbonate, a graphite and MnCO3 (60:40 by weight) mixture was subjected to temperature and pressure ranges of 6.5–7.7 GPa and 1700°–2100°C, respectively. Diamonds were synthesized from graphite in the presence of MnCO3, at 2000°C and 7.7 GPa, where MnCO3 was confirmed to be in a molten state. Although MnO was found to be decomposed from the samples that were subjected to the aforementioned PT conditions, no diamond formation was detected from an MnO and graphite system for identical experimental conditions. Therefore, it was concluded that MnCO3 solvent catalyzed diamond formation from graphite.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1151-2916.1997.tb02900.x
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