Relations among X-ray parameters and Graphitization
Open Access
- 1 January 1968
- journal article
- Published by The Carbon Society of Japan in TANSO
- Vol. 1968 (54) , 80-83
- https://doi.org/10.7209/tanso.1968.80
Abstract
The coke PV-7, prepared by carbonizing polyvinylchloride to 680°C, was heat-treated at different temperatures and residence times in the flow of nitrogen and under reduced pressure of about 0.02 Torr. On these heat-treated samples, the relations between mean lattice spacing c0 and crystallite sizes Lc (00l) and between strain along the c-axis εc and -c0 were investigated.The results are summarized as follows, 1) The graphitization process of PV-7 seems to consist of two stages (-c0>6.85Å and c0Lc (00l) of PV-7 is larger than that of the petroleum coke. This difference is explained to come from the difference in the real size of crystallite between them. 3) The relation between εc and -c0 in the second stage of graphitization can be explained by the assumption that two kinds of interlayer spacing, 3.354 and 3.44Å, coexist in a packet of graphite-like layers.Keywords
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