The effects of chromate treatment on the corrosion of an aluminum/copper aircraft alloy were examined with a galvanic corrosion apparatus composed of two electrodes and a zero resistance ammeter. Combinations of pure Al, pure Cu, and AA2024-T3 electrodes were immersed in 0.1 M NaCl solution, which was saturated with air, O2 , or argon. Selection of electrode material or differential aeration re...

Study of the corrosion behaviour of a magnetron sputtered Al–Cu/Al–Cu–Mg model alloy couple in sulphate solutions has been undertaken to gain insight into the galvanic coupling between the matrix and SAl2CuMg particles in the 2024 aluminium alloy (AA2024). Polarisation curves and local electrochemical impedance spectroscopy measurements (LEIS) were performed on the individual alloys and on the ...

in this research, mechanical alloying was used to synthesize ultrafine grained aa2024 and aa2024-b4c powders in an attrition mill under argon atmosphere up to 50 h with the rotational speed of 400 rpm. in order to determine the grain size of the matrix, x-ray diffraction test and williamson–hall method was used. after mechanical alloying, hot pressing and hot extrusion were used for densificati...

Aluminium alloys such as AA2024 are susceptible to severe corrosion attack in aggressive solutions (e.g. chlorides). Conversion coatings, like chromate, or rare earth conversion coatings are usually applied in order to improve corrosion behaviour of aluminium alloys. Methacrylate-based hybrid films deposited with sol–gel technique might be an alternative to conversion coatings. Barrier properti...

0010-938X/$ see front matter 2011 Elsevier Ltd. doi:10.1016/j.corsci.2011.04.027 ⇑ Corresponding author. E-mail address: [email protected] (S.V. L The cellular automata (CA) methodology is applied to the case of intergranular corrosion. Appropriate CA rules are generated which can reproduce and predict the advance of a corrosion front. The proposed model shows qualitative and quantitati...

Al2O3 ve SiC Takviyeli AA2024 Esaslı Nanokompozitlerin Mikroyapı Mekanik Özelliklerinin İncelenmesi
 Uğur Çalıgülü1, Aykut Çanakçı2, Mustafa Türkmen3, Nida Darcan1, Vahittin Kaçmış1 
 1Fırat Üniversitesi, Teknoloji Fakültesi, Metalürji Malzeme Mühendisliği Bölümü, Elazığ
 2Karadeniz Teknik Mühendislik Metalurji Trabzon
 3Gebze Ulaşım Teknolojileri Enstitüsü, Gebze/Kocaeli&#x...

Lithium carbonate and lithium oxalate were incorporated as leachable corrosion inhibitors in model organic coatings for the protection of AA2024-T3. The coated samples were artificially damaged with a scribe. It was found that the lithium-salts are able to leach from the organic coating and form a protective layer in the scribe on AA2024-T3 under neutral salt spray conditions. The present paper...