Colaux, J.L., Louette, P., Colomer, J.-F., Edmondson, P.D., Donnelly, S. E. and Terwagne, G. (2011) Study of carbon nitride compounds synthesised by co-implantation of 13C and 14N in copper at different temperatures. Materials Chemistry and Physics, 126 (1-2). pp. 337-343. ISSN 0254-0584Metadata only available from this repository.
Carbon nitride compounds have been synthesised in copper by simultaneous high fluence (1018 at. cm−2) implantation of 13C and 14N ions. During the implantation process, the substrate temperature was maintained at 25, 250, 350 or 450 °C. Depth profiles of 13C and 14N were determined using the non-resonant nuclear reactions (NRA) induced by a 1.05 MeV deuteron beam. The retained doses were deduced from NRA measurements and compared to the implanted fluence. The chemical bonds between carbon and nitrogen were studied as a function of depth and temperature by X-ray photoelectron spectroscopy (XPS). The curve fitting of C 1s and N 1s core level photoelectron spectra reveal different types of C–N bonds and show the signature of N2 molecules. The presence of nitrogen gas bubbles in copper was highlighted by mass spectroscopy. The structure of carbon nitride compounds was characterised by transmission electron microscopy (TEM). For that purpose, cross-sectional samples were prepared using a focused ion beam (FIB) system. TEM observations showed the presence of small amorphous carbon nitride “nano-capsules” and large gas bubbles in copper. Based on our observations, we propose a model for the growth of these nano-objects. Finally, the mechanical properties of the implanted samples were investigated by nano-indentation.
|Uncontrolled Keywords:||Fullerenes; Nanostructures; Electron microscopy; XPS; Tribology|
|Subjects:||Q Science > Q Science (General)|
Q Science > QC Physics
|Schools:||School of Applied Sciences|
|Depositing User:||Sharon Beastall|
|Date Deposited:||08 May 2012 09:26|
|Last Modified:||08 May 2012 09:26|
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