Characterization of oxide layers made on aluminium alloy 7075 by different methods

Mateusz Jędrusik, Aleksandra Dębowska, Agnieszka Kopia, Paweł Petrzak, Damian Koclęga, Izabela Kalemba-Rec


Aluminium and aluminium alloys are now widely used as materials for structural applications due to a number of valuable properties. Improvement in functional and decorative properties of aluminium can be obtained by forming an oxide layer on its surface. The aim of the present study was to produce and compare the properties of oxide layers on the surface of aluminium alloy 7075 and compare their properties. Methods which were used during the study were as follows: phosphating, micro-arc oxidation, and a chemical method involving the formation of the passive layer. Layers were subjected to corrosion tests. SEM and EDS methods were used for characterization of received results. Also some tests on optical ptofilometer were done. It was proven that the micro-arc oxidation method allows for obtaining a layer with the greatest thickness and highest  corrosion resistance.  



oxide layers; aluminum alloy 7075; micro-arc oxidation; phosphate coating; the chemical method

Full Text:



Totten G.E., MacKenzie D.S.: Handbook of aluminum. Marcel Dekker Inc., New York 2003

Yerokhin A.L., Snizhko L.O., Gurevina N.L., Leyland A., Pilkington A., Matthews A.: Spatial characteristics of discharge phenomena in plasma elec-trolytic oxidation of aluminium alloy. Surface and Coatings Technology, 177/178 (2004), 779–783

Ma Y., Nie X., Northwood D.O., Hu H.: Systematic study of the electrolytic plasmaoxidation process on a Mg alloy for corrosion protection. Thin Solid Films, 494 (2006) 296–301

Dejun K., Hao L., Jinchun W.: Effects of micro arc oxidation on fatigue limits and fracture morphologies of 7475 high strength aluminum alloy. Journal of Alloys and Compounds, 650 (2015), 393–398

Wang Z., Wu L., Cai W.: Effects of fluoride on the structure and properties of micro arc oxidation coating on aluminum alloy. Journal of Alloys and Compounds, 505 (2010), 188–193

Dejun K., Jinchun W.: Salt spray corrosion and electrochemical corrosion properties of anodic oxide coating on 7475 aluminum alloy. Journal of Alloys and Compounds, 632 (2015), 286–290

Zuo K., Wang X., Liu W.: Preparation and characterization of Ce-silane-ZrO2 composite coatings on 1060 aluminum. Transactions Nonferrous Metals Society of China, 24 (2014), 1474–1480

Vlcak P., Cerny F., Drahokoupil J.: The microstructure and surface hardness of Ti6Al4V alloy implanted with nitrogen ions at an elevated temperature. Journal of Alloys and Compounds, 620 (2014), 48–54

Rechner R., Jansen I., Beyer E.: Influence on the strength and aging resistance of aluminum joints by laser pre-treatment and surface modification. International Journal of Adhesion and Adhesives, 30 (2010), 595–601

Vargel C., Jacques M., Schmidt M. P.: Corrosion of Aluminium, Aluminium and Its Alloys. Elsevier 2004

Vargel C., Jacques M., Schmidt M.P.: Corrosion of Aluminium, Types of Corrosion on Aluminium. Elsevier 2004

Biestek T., Weber J.: Powłoki konwersyjne. WNT, Warszawa 1968

Shena D., Lia G., Guob C., Zouc J., Caia J., Hea D., Maa H., Liua F.: Microstructure and corrosion behavior of micro-arc oxidation coating on 6061 aluminum alloy pre-treated by high-temperature oxidation. Applied Surface Science, 287 (2013), 451– 456

Shchedrina I., Rakoch A.G., Henriona G., Martin J.: Non-destructive methods to control the properties of MAO coatings on the surface of 2024 aluminium alloy. Surface & Coatings Technology, 238 (2014), 27–44



  • There are currently no refbacks.