Toz Metalurjisi Metoduyla Al-SiC Kompozit Malzeme Üretimi ve Aşınma Özelliklerinin Araştırılması

Year 2019, Volume: 7 Issue: 3, 741 - 754, 27.09.2019

Halil Arık

https://doi.org/10.29109/gujsc.587637

Cited By: 5

Abstract

Özet

 Alüminyum matrisli seramik parçacık takviyeli
kompozitler matris malzemeye göre daha yüksek aşınma ve ısıl genleşme direnci
gibi özelliklerinden dolayı özellikle uzay ve havacılık alanında tercih edilen
malzemelerdir. Bu çalışmada katı hal yöntemi olan toz metalürjisi üretim metodu
uygulanarak SiC takviyeli kompozit malzeme üretilmiştir. Başlangıçta matris
yapıyı oluşturan atomize alüminyum tozu ve SiC tozu turbula cihazında mekanik
olarak öğütme ve karıştırma işlemine tabi tutularak kompozit toz üretimi
gerçekleştirilmiştir. 500 MPa basınçta preslenen ve 650 °C’de 2 saat süreyle sinterlenen toz
metal kompozit numunelerin mekanik testleri ve metalografik incelemeleri
yapılmıştır. Gerçekleştirilen uygulama ile takviye elemanının matris yapı
içerisinde homojen dağılımı ve kompozitin aşınma direnci başta olmak üzere
mekanik özelliklerinde iyileştirme hedeflenmiştir. Üretilen kompozit malzeme
üzerinden gerçekleştirilen metalografik incelemeler mekanik karıştırma ile
SiC’ün matris yapı içerisinde homojen dağılımının gerçekleştiğini gösterirken elde
edilen sertlik, kırma testi ve aşındırma testi sonuçları alüminyuma SiC ilavesinin
kompozit malzemenin mekanik özelliklerini önemli ölçüde iyileştiğini
göstermektedir.

Keywords

Toz metalürjisi, Al-SiC kompozit, Abrasiv aşınma

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