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Growth of CNx/BN: C multilayer films by magnetron sputtering
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Applied Optics .
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2000 (English)In: Thin Solid Films, ISSN 0040-6090, Vol. 360, no 1-2, 17-23 p.Article in journal (Refereed) Published
Abstract [en]

Symmetric CNx/BN:C multilayer thin films, with nominal compositional modulation periods of ? = 2.5, 5, and 9 nm were deposited by unbalanced dual cathode magnetron sputtering from C (graphite) and B4C targets in an Ar/N2 (60/40) discharge. The multilayers and single-layer of the constituent CNx and BN:C compounds were grown to a total thickness of 0.5 µm onto Si(001) substrates held at 225°C and a negative floating potential of approx. 30 V (Ei = 24 eV). Layer characterizations were performed by TEM, X-ray reflectivity, RBS, and nanoindentation measurements. Results show that CN0.33 and BN:C (35, 50, and 15 at.% of B, N, and C, respectively) layers were prepared at the above conditions. It is suggested that all films exhibit a three-dimensional interlocked structure with a cylindrical texture in the film growth direction. The structure was continuous over relatively well defined and smooth CNx/BN:C interfaces. All coatings exhibit extreme elasticity with elastic recoveries as high as 85-90% (10 mN maximum load) attributed to the observed structure. However, the multilayers were stiffer and more elastic compared to that of the single-layers and thus shows promise for improved protective properties.

Place, publisher, year, edition, pages
2000. Vol. 360, no 1-2, 17-23 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-47701DOI: 10.1016/S0040-6090(99)00950-5OAI: diva2:268597
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2009-10-29

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Berlind, TorunHultman, Lars
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