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

• Autorzy: Jędrusik M. , Dębowska A. , Kopia A. , Petrzak P. , Koclęga D. , Kalemba-Rec I.

Identyfikatory

DOI

10.7494/mafe.2016.42.3.187

Warianty tytułu

PL

Charakterystyka warstw tlenkowych wytworzonych na stopie aluminium 7075 z zastosowaniem różnych metod

• Języki publikacji: EN

Abstrakty

EN

Aluminum and aluminum alloys are now being widely used as materials for structural applications due to a number of valuable properties. Improvement in the functional and decorative properties of aluminum 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 aluminum alloy 7075 and compare their properties. The methods that were used during the study were as follows: phosphating, micro-arc oxidation, and a chemical method involving the formation of a passive layer. The layers were subjected to corrosion tests. SEM and EDS methods were used for characterization of the received results. Also, some tests on an optical profilometer were done. It was proven that the micro-arc oxidation method allowed us to obtain a layer with the greatest thickness and highest corrosion resistance.

PL

Glin i jego stopy są obecnie powszechnie wykorzystywanym materiałem do zastosowań konstrukcyjnych ze względu stosunek masy do wytrzymałości. Poprawę własności funkcyjnych i dekoracyjnych aluminium uzyskać można przez wytworzenie warstwy tlenku na jego powierzchni. Celem badań było wytworzenie warstw tlenkowych na podłożu ze stopu aluminium 7075 i porównanie ich właściwości. Zastosowano trzy metody: fosforanowanie, micro-arc oxidation oraz metodę chemiczną polegającą na wytworzeniu warstwy pasywnej. Otrzymane powłoki poddano testom korozyjnym oraz charakteryzowano z zastosowaniem następujących metod: SEM, EDS. Wykonano też badania na profilometrze optycznym. Metoda micro-arc oxidation pozwala na uzyskanie warstwy o największej grubości oraz najlepszej odporności na korozję.

Słowa kluczowe

EN

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

PL

warstwy tlenkowe; stop aluminium 7075; MAO; fosforanowanie; metoda chemiczna

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: Metallurgy and Foundry Engineering
• Rocznik: 2016
• Tom: Vol. 42, no. 3
• Strony: 187--193
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Jędrusik M.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Krakow, Poland

autor

Dębowska A.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Krakow, Poland

autor

Kopia A.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Krakow, Poland

autor

Petrzak P.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Krakow, Poland

autor

Koclęga D.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Krakow, Poland

autor

Kalemba-Rec I.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Krakow, Poland

Bibliografia

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• [2] Yerokhin A.L., Snizhko L.O., Gurevina N.L., Leyland A., Pilkington A., Matthews A.: Spatial characteristics of discharge phenomena in plasma electrolytic oxidation of aluminium alloy. Surface and Coatings Technology, 177/178 (2004), 779–783
• [3] 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
• [4] 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
• [5] 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
• [6] 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
• [7] 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
• [8] 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
• [9] 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
• [10] Vargel C., Jacques M., Schmidt M.P.: Corrosion of Aluminium, Aluminium and Its Alloys. Elsevier 2004
• [11] Vargel C., Jacques M., Schmidt M.P.: Corrosion of Aluminium, Types of Corrosion on Aluminium. Elsevier 2004
• [12] Biestek T., Weber J.: Powłoki konwersyjne. WNT, Warszawa 1968
• [13] 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
• [14] 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

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).