Nanodiamond stability with friction and heat

The structural stability of nanodiamonds (ND) has been investigated as a function of abrasion friction and thermal annealing. Nanodiamonds examined before and after abrasion by transmission electron microscopy (TEM) are found to have modified surface characteristics. Frictional rubbing generates sma...

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Bibliographic Details
Published in:Journal of physics. Conference series 2015-10, Vol.644 (1), p.12022
Main Authors: Butterworth, J, Briston, K, Claeyssens, F, Inkson, B J
Format: Article
Language:English
Subjects:
Abrasion
Annealing
Diamonds
Nanostructure
Physics
Rubbing
Structural stability
Surface properties
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Summary:The structural stability of nanodiamonds (ND) has been investigated as a function of abrasion friction and thermal annealing. Nanodiamonds examined before and after abrasion by transmission electron microscopy (TEM) are found to have modified surface characteristics. Frictional rubbing generates smaller, non-spherical particles with rougher, cleaner surfaces, and debris consisting of compacted ND+amorphous carbons. Annealing of ND and abraded ND at 1000°C demonstrates that abrasive pre-treatment increases proportion of transformation to onion-like-carbon (OLC) structures with generation of 3-30nm diameter OLC. The OLC achieved are of similar dimensions to those grown from ND annealed with a Ni catalyst but with more defective microstructures.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/644/1/012022