BOR KARBÜR TAKVİYELİ ALÜMİNYUM ESASLI KOMPOZİT MALZEMELERİN TUZLU ORTAMDA KOROZYON DAVRANIŞININ İNCELENMESİ

Year 2019, , 1135 - 1142, 31.07.2019

Kubilay Karacif , Hasan Karabulut Ramazan Çıtak

https://doi.org/10.28948/ngumuh.598105

Abstract

   Bu çalışmada, toz metalurjisi yöntemi
kullanılarak elde edilen bor karbür (B₄C) takviyeli alüminyum esaslı
kompozit malzemelerin tuzlu ortamdaki korozyon davranışları incelenmiştir.
Üretim esnasında, alüminyum ve bor karbür tozlarının homojen şekilde birbiri
içerisinde dağılımını sağlamak için bir saat karıştırma veya farklı sürelerde
mekanik alaşımlama işlemleri uygulanmıştır.  Karıştırma veya farklı sürelerde uygulanan mekanik
alaşımlama işlemleri sonrasında presleme ve sinterleme yapılarak elde edilen bor
karbür takviyeli alüminyum esaslı kompozit malzemelere %3,5’luk tuzlu su (NaCl)
ortamında potansiyodinamik korozyon testleri uygulanmıştır. Elektrokimyasal
korozyon testleri sonucunda mekanik alaşımlama süresinin artması ile malzemenin
korozyon hızının arttığı, korozyon dayanımının azaldığı belirlenmiştir.

 

Keywords

Alüminyum, bor karbür, toz metalurjisi, mekanik alaşımlama, korozyon

Thanks

Proje desteği için Gazi Üniversitesi BAP Birimine teşekkür ederiz.

THE INVESTIGATION OF CORROSION BEHAVIOR OF ALUMINUM COMPOSITES REINFORCED WITH BORON CARBIDE IN SALTWATER MEDIUM

Abstract

   In the study, corrosion behaviors of powder
metal aluminum composites reinforced with boron carbide (B₄C) were
investigated in saltwater medium. For the production of composite specimens, one
hour mixing or mechanical alloying for different durations was applied to
ensure uniform distribution of aluminum and boron carbide powders. After
pressing and sintering treatment of specimens, electrochemical corrosion tests
were applied in 3.5% NaCl solution by potentiodynamic methods. According to electrochemical
corrosion test results, it was determined that the corrosion rate of material was
increased and corrosion resistance decreased with the increase of mechanical
alloying duration.

Keywords

Aluminum, boron carbide, powder metallurgy, mechanical alloying, corrosion

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