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Proceedings Paper

Structural, mechanical, and electrical properties of high-pressure sintered C60 nanowhiskers and C60 powder
Author(s): Jun-ichi Minato; Kun'ichi Miyazawa; Hisao Kanda; Minoru Akaishi
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Paper Abstract

C60 nanowhiskers fabricated by the liquid-liquid interfacial precipitation method were sintered at 800 °C under 5.5 GPa for 2 h. Structural, mechanical, and electrical properties of sintered C60 nanowhiskers were compared with those of sintered pristine C60 powder under the same conditions. Sintered C60 nanowhiskers showed a relatively high density and a fine texture as compared to sintered pristine C60 powder probably due to the fibrous morphology of starting C60 nanowhiskers. Analysis using four-probe micro manipulator system (SUNYOU, MMS0024-01) revealed low electrical resistivity for the sintered samples. Electrical resistivity of sintered C60 nanowhisker was slightly higher than that of sintered pristine C60 powder. Both of the sintered samples showed high micro-Vickers hardness about 1100 HV. XRD patterns of the sintered samples showed only diffuse peaks that are characteristic of glassy carbon. The peak intensity of glassy carbon in the sintered C60 nanowhiskers was weaker than that of sintered pristine C60 powder, which was consistent with the different electrical resistivity. Characterization by FTIR and Raman spectroscopy confirmed no sign of C60 molecules for both the sintered samples indicating that C60 molecules were significantly reduced by the high temperature and high pressure treatment. The differences of textural and electrical properties between sintered C60 nanowhiskers and sintered pristine C60 powder suggest a good sinterability of the C60 nanowhiskers due to their fibrous morphology as compared with pristine C60 powder.

Paper Details

Date Published: 16 February 2004
PDF: 8 pages
Proc. SPIE 5648, Smart Materials III, (16 February 2004); doi: 10.1117/12.582237
Show Author Affiliations
Jun-ichi Minato, National Institute for Materials Science (Japan)
Kun'ichi Miyazawa, National Institute for Materials Science (Japan)
Hisao Kanda, National Institute for Materials Science (Japan)
Minoru Akaishi, National Institute for Materials Science (Japan)


Published in SPIE Proceedings Vol. 5648:
Smart Materials III
Alan R. Wilson, Editor(s)

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