Sıcak Pres ile Üretilmiş Al-Nano SiC Kompozitin Mekanik Özelliklerinin İncelenmesi

Bu çalışmada saf alüminyum (Al) matris içerisine ağırlıkça % 0.25, 0.5 ve 1 oranlarında nano silisyum karbür partikülleri ilave edilmiş ve ardından toz karışımları önce mekanik alaşımlama, daha sonra sıcak pres ile sinterleme işlemine tabi tutulmuştur. Sinterleme sonrasında elde edilen numuneler metalografik işlemler ile hazırlanıp aşınma ve eğilme testlerine tabi tutulmuştur. Aşınma testleri sonucunda, saf Al matrise artan miktarda nanopartikül ilavesinin, belli orana kadar aşınma direncini arttırdığı gözlenmiştir. Benzer şekilde, artan nanopartikül takviyesiyle, eğilme testi sonuçlarında da gözle görülür artışın olduğu gözlenmiştir. Takviye partiküllerinin yapı içerisindeki dağılımını incelemek amacıyla numunelere EDX analizi ile elementel dağılım analizi yapılmıştır. Elde edilen sonuçlar literatür ile karşılaştırılarak değerlendirilmiştir.

Anahtar Kelimeler:

NanoSiC, Kompozit, Sıcak pres, Sinterleme

Investigation of Mechanical Properties of Al-Nano SiC Composite Produced by Hot Pressing

In this study, nano SiC particles with different ratios of 0.25, 0.5 and 1 wt% were added to the pure Al, and then the powder mixtures were subjected to mechanical alloying and sintering by hot press. After sintering process, samples were metallographically prepared for wear and bending tests. The results showed that the addition of a certain amount of nano SiC particles increased the wear resistance of pure Al matrix. The similar results were obtained after bending test results. In order to study the distribution of reinforcement particles in the structure, elemental distribution analysis was performed with EDX analysis. The results were evaluated in detail.

Keywords:

Nano SiC, Composite, Hot pressing, Sintering,

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