Naslov
Raman study of a-WC thin films

Autori
Pivac, Branko ; Radić, Nikola ; Meinardi, Franco

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
E-MRS 2001 Spring Meeting Book of Abstracts / Glasow, P. ; Priolo, F. - Strasbourg : European Materials Research Society, 2001, C-34

Skup
E-MRS 2001 Spring Meeting

Mjesto i datum
Strasbourg, Francuska, 05.06.2001. - 08.06.2001

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
tungsten carbide; Raman scattering; thin films

Sažetak
Tungsten carbide is often used coating material for protection against wear, erosion, and high temperature oxidation due to its high hardness and excellent thermal stability. Due to its high melting point (2870°C) a various techniques are usually employed for its deposition. We used DC magnetron sputtering of W in a hydrocarbon environment to produce WC crystalline phases at a lower deposition temperature in comparison with other techniques. Depositing nanocrystalline carbides in an amorphous carbon matrix has a promising applications. These composites blend the hardness and thermal stability of carbides with the low friction coefficient of a-C to create a superior coating. A series of films with different composition parameters were prepared, varying the substrate temperature, applied bias and gas mixture. Raman spectroscopy was used to study a-C phase as a function of the deposition parameters. All spectra of a-C present in the material consists of two peaks, one related to graphite mode (G-line) and another which is due to the disorder (D-line). It is shown that increase in substrate temperature and applied bias affects the a-C structure by varying the ratio between the two components.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA