Accessible Requires Authentication Published by De Gruyter March 26, 2013

The catalytic effect of iron on the graphitization of diamonds

Matheus Paes Peçanha and Marcello Filgueira

The objective of this work is to study the graphitization of diamonds due to the presence of iron. Composites of Fe-15 wt.% diamonds were processed by means of conventional powder metallurgy with the parameters of cold pressing at 350 MPa and sintering at 1100°C/360 min. The oxidative behavior of diamonds was analyzed using thermal analysis. The influence of sintering was analyzed through microstructural investigation by means of scanning electron microscopy and energy-dispersive X-ray spectroscopy. The absorption bands of the C–C bonds of the graphite and diamond structures were analyzed using infrared spectroscopy. The results show the intensity of graphitization in the presence of Fe, and that the temperature utilized in the experiments was appropriate.


2 Correspondence address, Matheus Paes Peçanha, 2000 Alberto Lamego Av., Zip Code: 28013-600, Campos dos Goytacazes, Rj, Brazil, Tel.: 55228149-2194, E-mail: , Professor Marcello Filgueira, 2000 Alberto Lamego Av., Zip Code: 28013-600, Campos dos Goytacazes, Rj, Brazil., Tel.: 55229893-3379, E-mail:

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Received: 2012-11-27
Accepted: 2013-1-25
Published Online: 2013-03-26
Published in Print: 2013-08-08

© 2013, Carl Hanser Verlag, München