Naslov
Thin Films of Al-Nb Intermetallic Compounds

Autori
Car, Tihomir ; Radić, Nikola ; Ivkov, Jovica ; Tonejc, Antun

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

Izvornik
Proceedings of ICTF14 & RSD2008 / De Gryse, Roger ; Depla, Diederik ; Poelman, D. ; Mahieu, S. ; Leroy, W.P. ; Poelman, H. - Ghent : University of Ghent, 2008, 261-261

ISBN
978 90 334 7347 0

Skup
14th International Conference on Thin Films

Mjesto i datum
Gent, Belgija, 17.11.2008. - 20.11.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
thin films; intermetallic compounds; aluminum; niobium

Sažetak
Thin films of AlxNb1-x (95 ≥ x ≥ 20), have been prepared by magnetron codeposition in the CMS-18 sputtering system at room temperature. The structure of the as-deposited films was examined by the XRD and the AlNb films were amorphous in the range of composition from 30% to 85% aluminum content. Al95Nb5, Al90Nb10 and Al20Nb80 films were nanocrystalline. For the purpose of examination of thermal stability the samples were deposited onto glass and alumina ceramics. Thermal stability and phase transformation of the Al-Nb amorphous and nanocrystalline films under isochronal conditions were examined by continuous in situ electrical resistance measurements in vacuum. Estimated values of ρ and α are in accordance with the Mooij correlation, and reflect typical properties of the amorphous alloys containing early transition metals. As determined by the XRD method, the first dominant component after phase transformation is the AlNb3 intermetallic compound for Nb-rich alloys and the Al3Nb intermetallic compound for Al-rich alloys. The rate of extraction of intermetallic phase is dependent on composition. Amorphous Al-Nb films with composition closer to stoichiometric ratio of intermetallic compounds exhibit lower crystallization temperatures.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA