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Graphite Formation at 1150-1200°C from Hard-carbon Precursors and Magnetite

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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
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)

Submitter: 幅崎 浩樹

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