Journal
JOURNAL OF MATERIALS RESEARCH
Volume 20, Issue 3, Pages 742-746Publisher
MATERIALS RESEARCH SOCIETY
DOI: 10.1557/JMR.2005.0095
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C-60 nanowhiskers fabricated by liquid-liquid interfacial precipitation method and pristine C-60 powder were sintered at 800 degrees C under 5.5 GPa for 2 h. The specimens showed high micro-Vickers hardness about 1100 kg/mm(2) and electrical resistivity as low as several Omega m. Structural characterization by x-ray diffraction, high-resolution transmission electron microscopy, Fourier transform infrared, and Raman spectroscopy revealed that Most Of C-60 molecules were broken to form turbostratic graphite by high-pressure and high-temperature treatment. Comparison with the pristine C-60 powder sintered under the same conditions suggests that the structural change depends microscopically on the C-60 molecules, but the size and the morphology of the starting material also affect the macroscopic sintering process.
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