The Effects of Environment Temperature on Corrosion Properties of Aluminum Alloy Coated with Graphene Oxide

Öz

In this study, the effects of environment temperature on the corrosion behavior of aluminum alloy coated with graphene oxide were investigated. Graphene oxide coating process was applied by electrophoretic coating method. In order to see the effects of temperature on corrosion behavior, electrochemical corrosion tests were carried out on graphene oxide coated samples in 3.5% NaCl environment at 20 °C, 40 °C and 60 °C temperature. In addition, scanning electron microscope (SEM) and X-Ray Diffraction (XRD) studies were also performed. In the scanning electron microscopy studies, the graphene oxide structure, called layer-by-layer, which covers the entire surface, were observed. In EDS analysis, it was determined that the sample surfaces were generally composed of carbon and oxygen, which are graphene oxide components. In XRD analysis of graphene oxide coated surfaces, graphene oxide peaks and aluminum peaks were observed. According to the corrosion test results, it was determined that the corrosion rate increased and the corrosion resistance decreased in graphene oxide coated samples with the increase in environment temperature.

Anahtar Kelimeler

• Graphene oxide
• corrosion
• aluminum
• electrophoretic coating

Grafen Oksit Kaplanmış Alüminyum Alaşımının Korozyon Davranışına Ortam Sıcaklığının Etkileri

Öz

Bu çalışmada grafen oksit ile kaplanmış alüminyum alaşımının korozyon davranışına ortam sıcaklığının etkileri araştırılmıştır. Grafen oksit kaplama işlemi elektroforetik kaplama yöntemi ile yapılmıştır. Sıcaklığın korozyon davranışına etkilerini görmek için 20 °C, 40 °C ve 60 °C sıcaklıklardaki %3.5 NaCl ortamında, grafen oksit kaplanmış alüminyum alaşımı numunelere elektrokimyasal korozyon deneyleri yapılmıştır. Ayrıca, taramalı elektron mikroskobu (SEM) ve X-Işınları Kırınımı (XRD) çalışmaları da yapılmıştır. Taramalı elektron mikroskobu çalışmalarında tüm yüzeyi kapatan tabakalı yapı olarak adlandırılan grafen oksit yapısı görülmüştür. EDS analizlerinde numune yüzeylerinin genel olarak grafen oksit bileşenleri olan karbon ve oksijenden oluştuğu belirlenmiştir. XRD analizlerinde grafen oksit kaplanmış yüzeylerde grafen oksit piki ve alüminyum pikleri görülmüştür. Korozyon deneyleri sonuçlarına göre, ortam sıcaklığının artışı ile grafen oksit kaplanmış numunelerde korozyon hızının arttığı, korozyon direncinin azaldığı belirlenmiştir.

Anahtar Kelimeler

• Grafen oksit
• korozyon
• alüminyum
• elektroforetik kaplama

Kaynakça

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