Role of Iron and Nickel for the Formation of Graphite Crystals at Low Temperatures
- 1 January 2002
- journal article
- Published by The Carbon Society of Japan in TANSO
- Vol. 2002 (201) , 12-15
- https://doi.org/10.7209/tanso.2002.12
Abstract
The formation of graphite crystals was found at relatively low temperatures as 900-1100°C from the powder mixtures of poly (vinyl alcohol) and either iron or nickel oxide. From the mixtures with Fe2O3, graphite crystals were formed above 900°C, but those with NiO the heat treatment at 1000°C for more than 5h. Before graphite formation from the mixtures with NiO, well-developed turbostratic structure was found to be formed. Formation of graphite crystals at the temperatures as low as 900-1000°C was supposed to occur through the dissolution and precipitation from nickel melt, but through the decomposition of various iron carbides.Keywords
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