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Transmission electron microscopy, electron diffraction and hardness studies of high-pressure and high-temperature treated C-60
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UNSPECIFIED (2000) Transmission electron microscopy, electron diffraction and hardness studies of high-pressure and high-temperature treated C-60. JOURNAL OF PHYSICS-CONDENSED MATTER, 12 (50). pp. 10411-10421.
Full text not available from this repository, contact author.Abstract
TEM and electron diffraction investigations were performed on high-temperature and high-pressure treated polymeric C-60 fullerene, prepared at 700, 773 and 800 K in the pressure range of 3-9 GPa, for one hour. A mixed phase of alternating rhombohedral lamellae and tetragonal domains is formed, even at high pressures, with the ratio of polymers being dependent on the pressure applied. At higher temperatures, 900-1173 K, and for a similar pressure range, graphitic 'hard' carbon phases formed, via an interpolymer interface instability and/or shear mechanism. This phase exhibited a hardness of 10-15 GPa and a high degree of elastic recovery under indentation. Treatment times of 0.5-30 minutes for the graphitic phase showed the kinetics of graphitization to be slow (similar to1 h) and proceeding via cross-linked intermediates containing trapped whole C-60 cages. The influence of the cross-linking resulted in hardness values up to 33.5 GPa, for a twenty-minute treatment.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | JOURNAL OF PHYSICS-CONDENSED MATTER | ||||
| Publisher: | IOP PUBLISHING LTD | ||||
| ISSN: | 0953-8984 | ||||
| Official Date: | 18 December 2000 | ||||
| Dates: |
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| Volume: | 12 | ||||
| Number: | 50 | ||||
| Number of Pages: | 11 | ||||
| Page Range: | pp. 10411-10421 | ||||
| Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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