Yüzeyi ZnO Nanopartikülleri ile Kaplanmış Demir Matrisli Malzemelerin Karakterizasyonu ve Mekanik Özelliklerinin İncelenmesi

Year 2020, Volume: 8 Issue: 2, 365 - 370, 26.05.2020

Hamza Şimşir

https://doi.org/10.21541/apjes.658644

Abstract

Bu çalışmanın amacı toz metalürjisi ile demir ve demir-karbon alaşım malzemelerinin üretilmesi ve bu malzemelerin çinko oksit (ZnO) ile kaplanmasıyla mekanik özelliklerdeki artışı ortaya çıkarmaktır. Bu amaçla, demir ve demir-karbon alaşımı malzemeler toz metalürjisi ile üretilmiştir. Karbon malzeme olarak, aktif karbon, grafit, grafen, karbon nanotüp, vb. gibi yaygın kullanılan karbon malzemelere alternatif olabilecek, glukozdan sentezlenen hidrotermal karbonlar kullanılmıştır. Karbonlu ve karbonsuz demir malzemelerin yüzeyi SILAR metoduyla yaklaşık 200±17 nm uzunluğundaki çinko oksit partikülleri tarafından kaplanmıştır. Bu kompozitlerin yapısı SEM, SEM-EDX ve XRD analizleri ile karakterize edilmiştir. Malzemelerin mekanik özelliklerine ZnO kaplamanın etkisi ise sertlik ve korozyon testleri ile incelenmiştir. Bu sonuçlara göre, ZnO kaplanmış kompozitlerin hem sertlik değerlerinde (%44 ve %73) hem de korozyon dayanımlarında (%118 ve %60) kaplamasız malzemelere kıyasla önemli derece artış meydana gelmiştir.

Keywords

toz metalurjisi, demir, SILAR metodu, çinko oksit

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