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Graphitization of carbon beads under pressure

✍ Scribed by M. Inagaki; K. Horii; S. Naka

Publisher: Elsevier Science
Year: 1975
Tongue: English
Weight: 571 KB
Volume: 13
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(75)90265-1

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✦ Synopsis

Non-graphitizing carbon beads were heat-treated to 1300" -1900" under 5 kbar. Whereas the original beads carbonized at looo" graphitize abruptly at 1500" -16CV, the pre-heated ones demand higher temperature for their graphitization. The 1500"-pre-heated and 2100"-pre-heated graphitized above 17M1", and the 2670"-pre-heated above 1900". In the H'IT range where the graphitization occurs, the following changes in texture were observed: after the appearance of cactus-like projections, necks form between beads, needles and tiny flakes appear and optically anisotropic areas grow in size. A remarkable densification was found for the pre-heated beads in the same HIT range.

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