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Corrosion Resistance of Magnesium Alloys Processed by Equal Channel Angular Pressing

Yuasa, Motohiro and Furukawa, Ryo and Rifai, Muhammad and Miyamoto, Hiroyuki (2017) Corrosion Resistance of Magnesium Alloys Processed by Equal Channel Angular Pressing. Proceeding of Harris Foundation Research Presentation.

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Abstract

Corrosion resistance of Mg-5.5%Zn-0.6mass%Zr (ZK60) alloys processed by equal channel angular pressing (ECAP) was investigated using immersion tests and potentiodynamic polarization measurements in 5 mass% NaCl aqueous solution. The corrosion rates ECAPed ZK60 alloys increased by increasing number of ECAP passes. Potentiodynamic polarization curves suggested that cathodic reaction was activated, and a passive film formed during immersion tests was weakened by increasing ECAP passes. This can be due to increasing intermetallic compounds and dislocation density during ECAP process. For reducing dislocation density, heat treatment at 573K for 1.5h was performed. As the result, the corrosion rated od ECAPed ZK60 alloys were significantly reduced by the heat treatment.

Item Type: Article
Subjects: Daur Bahan Bakar Nuklir dan Bahan Maju > Bahan Struktur dan Bahan Maju > Teknik Sintesis Bahan Struktur
Divisions: Pusat Sains dan Teknologi Bahan Maju
Depositing User: EDITOR PSTBM BATAN
Date Deposited: 18 May 2018 01:21
Last Modified: 18 May 2018 01:21
URI: http://repo-nkm.batan.go.id/id/eprint/1280

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