The Effect of Rapid Cooling on the Corrosion Resistance of As-Cast Aluminium Alloy 5052

• Autorzy: Szklarz Z. , Krawiec H. , Rogal Ł.

Identyfikatory

DOI

10.7494/jcme.2017.1.2.48

• Języki publikacji: EN

Abstrakty

EN

The effect of rapid cooling by the vacuum suction casting method (VSC) on the microstructure and electrochemical response of the as-cast 5052 aluminium alloy is presented. The VSC method allowed us to obtain massive samples with a very high cooling rate (102 – 103)oC/s. The microstructure of the quick-cooled sample (QC) has been significantly changed. Finer grains and more-homogeneous intermetallic phase distribution has been observed. Corrosion potential (OCP) and polarization measurements (LSV) revealed a higher activity of the QC alloy than ingot (IN), which leads to a denser and thicker corrosion-product formation on the surface. Electrochemical Impedance Spectroscopy (EIS) indicates higher resistance values, which suggests a greater thickness of the corrosion products.

Słowa kluczowe

EN

aluminium alloys; cooling rate; EIS; passive films; pitting corrosion

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: Journal of Casting & Materials Engineering
• Rocznik: 2017
• Tom: Vol. 1, no. 2
• Strony: 48--52
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Szklarz Z.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23, 30-059 Krakow

autor

Krawiec H.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23, 30-059 Krakow

autor

Rogal Ł.

• Institute of Metallurgy and Material Science, Reymonta 25, 30-059 Krakow

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