Electrochemical corrosion characteristics of aluminium alloy 6061 T6 in demineralised water containing 0.1% chloride ion

Abstract

Abstract

Direct current electrochemical method is one of the techniques has been used to study the corrosion behaviour of metal/alloy in its environment. This paper attempts to investigate the corrosion behaviour of Al 6061 T6 immersed in Reactor TRIGA Mark II pool water containing about 0.1% NaCl content. The result shown that the corrosion rate value of the aluminium 6061 T6 increased with the presence of 0.1% Ion Chloride content in the deminelised water reactor pool  as compared to normal demineralised water. This is due to aggressiveness of chloride ion attack to metal surface. Beside corrosion rate analysis, the further tests such as corrosion behaviour diagram, cyclic polarization have been carried and the results have been reported.

 Abstrak

Kaedah elektrokimia arus langsung merupakan salah satu teknik yang telah digunakan untuk mengkaji ciri-ciri kakisan logam / aloi di dalam persekitaran. Kertas kertas ini menerangkan penyiasatan tentang ciri-ciri kakisan Al 6061 T6 apabila direndam dalam kolam air Reaktor TRIGA Mark II yang mengandungi kira-kira 0.1% kandungan NaCl. Hasil eksperimen ini menunjukkan bahawa nilai kadar kakisan Aluminium 6061 T6 meningkat dengan kehadiran Ion 0.1% Ion klorida di dalam kolam reaktor air suling berbanding dengan air suling biasa. Ini adalah disebabkan serangan agresif ion klorida ke permukaan logam. Selain analisis kadar kakisan, ujian lanjut seperti rajah kelakuan kakisan, polarisasi kitaran telah dijalankan dan keputusan telah dilaporkan.