Analysis of oxidation behavior under dry air of neat and Ta-alloyed furan-resin-derived carbons heat treated at 3000°C

Kazumasa Nakamura, Yasuhiro Tanabe, Noboru Suzuki, Masato Kakihana, Manabu Fukushima, Yoshikazu Teranishi, Leslie Lanticse, Eiichi Yasuda

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Oxidation behavior and structural changes of furan-resin-derived carbons heat treated at 3000°C were investigated at 500 and 700°C under dry air. Thermogravimetric analysis (TGA), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) were employed to detect and understand this behavior and the changes. Effect of tantalum on antioxidation property of Ta-alloyed carbon was also analyzed. The neat and Ta-alloyed carbons had insignificant weight losses even after being kept at 500°C for 12 h, while the Ta-alloyed carbon had weight loss lower than that of the neat carbon after being kept at 700°C for 6 h. It has been found by XPS that oxidation involves oxygen in internal area as well as on external surface of the carbons. It was also inferred that the carbon stored with oxygen in deeper internal area was easily oxidized. Ta alloying leads to change of the state of the Fermi energy on the specimens, which may cause the antioxidation property.

    Original languageEnglish
    Pages (from-to)1137-1142
    Number of pages6
    JournalSurface and Interface Analysis
    Volume37
    Issue number13
    DOIs
    Publication statusPublished - 2005 Dec 1

    Keywords

    • Carbon alloy
    • Glass-like carbon
    • Oxidation
    • Thermal analysis
    • XPS

    ASJC Scopus subject areas

    • Chemistry(all)
    • Condensed Matter Physics
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films
    • Materials Chemistry

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