Jülide Hazal TÜRKCAN, Oguz Kaan OZDEMİR, Mehmet Fahri SARAÇ

GRAFEN OKSİT TAKVİYESİNİN AA1050 METAL MATRİSLİ KOMPOZİTLERİN ELEKTRİKSEL DİRENÇ VE KOROZYON ÖZELLİKLERİNE ETKİSİ

Alüminyum matrisli kompozitler üzerine yapılan çalışmalar çoğunlukla farklı metalik veya seramik oksit katkılı yapıların ilavesinin mekaniksel ve tribolojik özelliklerini incelemek üzere kurgulanmasından dolayı bu tür yapıların farklı fonksiyonel özellikleri hakkında elde edilen bulgular oldukça sınırlı kalmaktadır. Bu kapsamda üstün elektriksel ve korozif direnç özelliği gösteren karbon türevi yapılardan biri olan grafen oksit yapısının AA1050 matrisi ile etkileşimi oldukça ilgi çekici bir hal almaktadır. Bu çalışmada, mekanik karıştırmalı döküm yöntemi ile üretilen grafen oksit katkılı AA1050 metal matris kompozitlerin mikroyapı, korozyon ve elektriksel özelliklerinin değişimleri incelenmiştir. Katı hal yöntemlerinin aksine, sıvı hal yöntemlerinden biri olarak bilinen yarı katı döküm tekniği ile yüksek yüzey alanına sahip grafen oksit yapısı, alüminyum matris içerisinde dağılımının sağlanması için seçilmiştir. Artan katkı miktarına bağlı olarak tane yapılarında uniform olarak dağılan grafen oksitlerin malzemenin elektriksel direncini 1kΩ’dan 60MΩ’a yükselttiği tespit edilmiştir. Ayrıca, korozif özelliklerine olan etkisi zamana bağlı potansiyel (OCP), Tafel ve anodik polarizasyon eğrileriyle incelenmiş olup, korozif direncin artan grafen oksit miktarıyla artış gösterdiği belirlenmiştir.

Anahtar Kelimeler:

AA1050, Grafen oksit, Korozyon, Elektriksel İletkenlik, Döküm

EFFECT OF ELECTRICAL RESISTANCE AND CORROSION PROPERTIES ON GRAFEN ADDED AA1050 METAL MATRIX COMPOSITES

Since the studies on aluminum matrix composites are mostly designed to examine the mechanical and tribological properties of the addition of different metallic or ceramic oxide added structures, the findings about the different functional properties of such structures are quite limited. In this context, the interaction of the graphene oxide structure, which is one of the carbon-derived structures with superior electrical and corrosive resistance, with the AA1050 matrix becomes very interesting. In this study, changes in microstructure, corrosion and electrical properties of graphene oxide added AA1050 metal matrix composites produced by mechanical stir casting method were investigated. Contrary to solid-state methods, the semi-solid casting technique, known as one of the liquid-state methods, has been chosen to ensure its dispersion in the aluminum matrix of the graphene oxide structure with a high surface area. It has been determined that graphene oxides, which are uniformly dispersed in grain structures due to the increasing amount of additives, increase the electrical resistance of the material from 1kΩ to 60MΩ. In addition, the effect on the corrosive properties was investigated by time-dependent potential (OCP), Tafel and anodic polarization curves, and it was determined that the corrosive resistance increased with increasing graphene oxide content.

Keywords:

AA1050, Graphene Oxide, Corrosion, Electrical Conductivity, Casting,

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Abdo, H.S., Seikh, A.H., Mohammed, J.A., Soliman, M.S., 2021. Alloying Elements Effects on Electrical Conductivity and Mechanical Properties of Newly Fabricated Al Based Alloys Produced by Conventional Casting Process. Materials, 14, 3971.
Akçamlı, N., Küçükelyas, B., Kaykılarlı, C., Uzunsoy, D., 2019. Investigation of microstructural, mechanical and corrosion properties of graphene nanoplatelets reinforced Al matrix composites. Materials Research Express, 6 (11), 115627.
Akçamlı, N., 2021. Grafen Nano Plakalarla Takviye Edilmiş Al-5,5Cu-0,5Mn Matrisli Kompozitlerin Toz Metalurjisi ile Üretim ve Karakterizasyonu. Konya Mühendislik Bilimleri Dergisi, 9 (2), 403-415.
Ciğeroğlu, Z., Haşimoğlu, A, Özdemir, O.K., 2020. Synthesis, characterization and an application of graphene oxide nanopowder: methylene blue adsorption and comparison between experimental data and literature data. Journal of Dispersion Science and Technology, 42 (5), 771-783.
Hedayatian, M., Vahedi, K., Nezamabadi, A., Momeni, A., 2020. Microstructural and Mechanical Behavior of Al6061‑Graphene Oxide Nanocomposites, Metals and Materials International, 26, 760-772.
Kandemir, S., 2018. Grafen Nanolevha Takviyesinin AlSi10Mg Alaşımının Mikroyapı ve Mekanik Özellikleri Üzerine Etkisi. Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji, 61 (1), 177-187.
Khanna, V., Kumar, V., Bansal, S.A., 2021. Mechanical properties of aluminium-graphene/carbon nanotubes (CNTs) metal matrix composites: Advancement, opportunities and perspective. Materials Research Bulletin, 138, 111224.
Kumar, L.K.D., Kulkarni, S.S., Deepu, J.N., Subramani, N., Sivaprakash, K., 2021. Investigation of mechanical & corrosion properties of graphene, R-glass fiber reinforced Aluminium 2024 hybrid composites. Materialstoday:Proceedings, 43 (2), 1684-1693.
Malik, V.R., Bajakke, P.A., Jambagi, S.C., Nagarjuna, C., Deshpande, A.S., 2020. Investigating Mechanical and Corrosion Behavior of Plain and Reinforced AA1050 Sheets Fabricated by Friction Stir Processing. The Minerals, Metals & Materials Society, 72 (10), 3582-3593.
Narayana, K.S.L., Benal, M.M., Shivanand, H.K., 2021. Effect of graphite on aluminium matrix composites fabricated by stir casting route – A review. Materialstoday: Proceedings, 45 (1), 327-331.
Narayanan, S., Sozhamannan, G.G., Hemalatha, K., VElmurugan, K., Venkatachalapathy, V.S.K., 2021. Corrosion and Hardness Behaviour of Al/GO Nanocomposites Processed by the Ultrasonic Gravitational Stir Casting Method. International Journal of Corrosion, 6658186, 1-8.
Narayanan, S., Sozhamannan, G.G., Hemalatha, K., Venkatachalapathy, V.S.K., 2021. Study on pitting corrosion behaviour of graphene oxide reinforced metal matrix composites. Materials Today: Proceedings, 39 (1), 160-164.
Nayak, P., Polai, B., Mitra, A., Nayak, S.K., 2020. Effect of graphene on the mechanical and conducting properties of aluminium. Proceedings of the 38th International Conference, Zagreb, 767-775.
Ononiwu, N.H., Ozoeqwu, C.G., Madushele, N., Akinlabi, E.T., 2021. Evaluation of particle size distribution, mechanical properties, microstructure and electrochemical studies of AA1050/fly ash metal matrix composite. Advances in Materials and Processing Technologies, Baskı aşamasında.
Pankade, S.B., Khedekar, D.S., Gogte, C.L., 2018. The influence of heat treatments on electrical conductivity and corrosion performance of AA 7075-T6 aluminium alloy, 2nd International Conference on Materials Manufacturing and Design Engineering, 20, 53-58.
Prabhakar, G.V.N.B., Dumpala, L., Kumar, N.R., 2020. Investigating Mechanical Properties, Corrosion Resistance and Machining Characteristics of Al5083-Graphene Composites Produced by Friction Stir Processing. Transactions of the Indian Institute of Metals, 73, 2955-2964.
Şenel, M.C., Gürbüz, M., Koç, E., 2017. Grafen takviyeli alüminyum esaslı kompozitlerin üretimi ve karakterizasyonu. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, 23 (8), 974-978.
Şenel, M.C., Gürbüz, M., 2020. Al2O3 Tanecik Boyutunun ve Katkı Oranının Alüminyum Matrisli Kompozitlerin Mekanik Özellikleri ve Mikro Yaısı Üzerine Olan Etkileri. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, 9 (1), 565-575.
Venkatesan, S., Xavior, M.A., 2017. Mechanical behaviour of Aluminium metal matrix composite reinforced with graphene particulate by stir casting method. Journal of Chemical and Pharmaceutical Sciences, 10 (1), 1-5.
Xie, Y., Meng, X., Mao, D., Qin, Z., Wan, L., Huang, Y., 2021. Homogeneously Dispersed Graphene Nanoplatelets as Long-Term Corrosion Inhibitors for Aluminum Matrix Composites. ACS Applied Materials & Interfaces, 13, 32161-32174.
Zheng, Z., Yang, X.-X., Li, J.-C., Zhang, X.-X., 2021. Muhammad, I., Geng, L. Preparation and properties of graphene nanoplatelets reinforced aluminum composites. Transactions of Nonferrous Metals Society of China, 31 (4), 878-886.