𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Hardness of high-pressure high-temperature treated single-walled carbon nanotubes

✍ Scribed by S. Kawasaki; Y. Nojima; T. Yokomae; F. Okino; H. Touhara

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
232 KB
Volume
388
Category
Article
ISSN
0921-4526

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✦ Synopsis

We have performed high-pressure high-temperature (HPHT) treatments of high quality single-walled carbon nanotubes (SWCNTs) over a wide pressure-temperature range up to 13 GPa-873 K and have investigated the hardness of the HPHT-treated SWCNTs using a nanoindentation technique. It was found that the hardness of the SWCNTs treated at pressures greater than 11 GPa and at temperatures higher than 773 K is about 10 times greater than that of the SWCNTs treated at low temperature. It was also found that the hardness change of the SWCNTs is related to the structural change by the HPHT treatments which was based on synchrotron X-ray diffraction measurements.

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