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Graphite Formation at 1150-1200°C from Hard-carbon Precursors and Magnetite
Title: | Graphite Formation at 1150-1200°C from Hard-carbon Precursors and Magnetite |
Authors: | Konno, Hidetaka Browse this author | Fujita, Keiko Browse this author | Habazaki, Hiroki Browse this author →KAKEN DB | Inagaki, Michio Browse this author |
Keywords: | Catalytic graphitization | Hard carbon | Organic polymer compounds | Transmission electron microscopy |
Issue Date: | 25-Jul-2002 |
Publisher: | 炭素材料学会 |
Journal Title: | 炭素 |
Journal Title(alt): | Tanso |
Volume: | 2002 |
Issue: | 203 |
Start Page: | 113 |
End Page: | 116 |
Publisher DOI: | 10.7209/tanso.2002.113 |
Abstract: | Graphite crystals were formed from a mixture of poly (vinyl pyrrolidone) (PVP) or polyacrylamide (PAA) pow-der and magnetite powder at 1150-1200°C. The graphite was identified by X ray diffraction and transmission elec-tron microscopy. The carbon yield from PAA at 1200°C was about four times of that from PVP, but PAA needed pro-longed heat treatment to transform turbostratic carbon to graphite. The graphite formation with magnetite from hard-carbon precursors (PVP and PAA) required higher temperatures and longer treatment time than with magnetite and soft-carbon precursors, such as poly (vinyl chloride) (PVC) and poly (vinyl alcohol) (PVA). Electron microscopic observations suggested that in addition to a carbide mechanism, a dissolution-precipitation mechanism may also take part in the graphitization of carbon derived from PVP and PAA. |
Rights: | 著作権は炭素材料学会にある。利用は著作権の範囲内に限られる |
Type: | article |
URI: | http://hdl.handle.net/2115/72925 |
Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 幅崎 浩樹
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