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Journal of Nanophotonics

Silicon carbide multilayer protective coating on carbon obtained by thermionic vacuum arc method
Author(s): Victor Ciupina; Christian P. Lungu; Rodica Vladoiu; Gabriel Prodan; Corneliu Porosnicu; Marius Belc; Iuliana M. Stanescu; Eugeniu Vasile; Razvan Rughinis
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Paper Abstract

Thermionic vacuum arc (TVA) method is currently developing, in particular, to work easily with heavy fusible material for the advantage presented by control of directing energy for the elements forming a plasma. The category of heavy fusible material can recall C and W (high-melting point materials), and are difficult to obtain or to control by other means. Carbon is now used in many areas of special mechanical, thermal, and electrical properties. We refer in particular to high-temperature applications where unwanted effects may occur due to oxidation. Changed properties may lead to improper functioning of the item or device. For example, increasing the coefficient of friction may induce additional heat on moving items. One solution is to protect the item in question by coating with proper materials. Silicon carbide (SiC) was chosen mainly due to compatibility with coated carbon substrate. Recently, SiC has been used as conductive transparent window for optical devices, particularly in thin film solar cells. Using the TVA method, SiC coatings were obtained as thin films (multilayer structures), finishing with a thermal treatment up to 1000°C. Structural properties and oxidation behavior of the multilayer films were investigated, and the measurements showed that the third layer acts as a stopping layer for oxygen. Also, the friction coefficient of the protected films is lower relative to unprotected carbon films.

Paper Details

Date Published: 27 February 2014
PDF: 13 pages
J. Nanophoton. 8(1) 083996 doi: 10.1117/1.JNP.8.083996
Published in: Journal of Nanophotonics Volume 8, Issue 1
Show Author Affiliations
Victor Ciupina, Univ. Ovidius Constanta (Romania)
Christian P. Lungu, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Rodica Vladoiu, Univ. Ovidius Constanta (Romania)
Gabriel Prodan, Univ. Ovidius Constanta (Romania)
Corneliu Porosnicu, National Institute for Lasers, Plasma and Radiation Physics (Romania)
Marius Belc, Univ. Ovidius Constanta (Romania)
Iuliana M. Stanescu, Univ. Ovidius Constanta (Romania)
Eugeniu Vasile, Univ. Politehnica of Bucharest (Romania)
Razvan Rughinis, Univ. Politehnica of Bucharest (Romania)

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