Naslov
Pasivnost amorfnih Al-slitina
(Passivity of sputter deposited Al-alloys)

Autori
Grubač, Zoran ; Metikoš-Huković, Mirjana ; Babić, Ranko

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

Izvornik
XXI. hrvatski skup kemičara i kemijskih inženjera : knjiga sažetaka = book of abstracts / Pičuljan, Katarina ; Smolec, Sonja - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2009, 257-257

ISBN
978-953-6894-38-3

Skup
Hrvatski skup kemičara i kemijskih inženjera (21 ; 2009)

Mjesto i datum
Trogir, Hrvatska, 19.04.2009. - 22.04.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Al-Mo alloys; sputter deposition; passivity

Sažetak
Aluminum alloys are widely used because of their low density, high specific strength, and good resistance to uniform corrosion. Aluminum, being an inherently active metal, owes its stability to a protective oxide film. A major corrosion issue with aluminum is the localized breakdown of the passive film, which leads to the initiation and growth of corrosion pits in chloride-containing environments. Improvements in the localized corrosion resistance of aluminum by conventional alloying techniques (equilibrium ingot metallurgy methods) are limited for two reasons: (i) the resulting intermetallic phases can be detrimental to corrosion resistance, (ii) most alloying elements which are known to impart improved corrosion properties have a limited solubility in aluminum. The passivity and corrosion behaviour of several supersaturated Al-Mo alloys formed by cosputter deposition have been investigated. The passive film that forms on each alloy becomes enriched in oxidized alloying component during anodic polarization. Sputter deposited Al-Mo alloys exhibit enhanced passivity and resistance to passivity breakdown in comparison with pure metal components. Many of the proposed passivity mechanisms such as vacancy-solute complex formation, pHpzc, structure stabilization, etc, are discussed.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

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