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İleri teknoloji malzemelerinden olan titanyum karbür (TiC), yüksek ergime sıcaklığı ve kararlı kimyasal yapısı sebebiyle günümüzde stratejik malzeme özelliğini korumaktadır [1-3]. Özellikle savunma sanayisinde yoğun kullanım alanı bulan TiC’ün, ülkemizde üretimi bu alanda önemini bir kat daha arttırmaktadır [4,5]. Bu çalışmada mikroporoz TiC preform sentezi gerçekleştirilmiştir. Başlangıç malzemesi olarak titanyum dioksit (TiO2), indirgeyici ajan olarak da yüksek safiyetli ve nano boyuttaki aktif karbon karası kullanılmıştır. Homojen olarak karıştırılan tozlar kalıp yardımıyla preslenerek numuneler reaksiyona hazırlanmıştır(Şekil1).

International Symposium on Light Alloys and Composite Materials
UHAKS

Yunus Emre Antika *Fatih Çalışkan Turgay Tehçi Okay Çalışkan Zafer Tatlı

In this work, synthesis of TiC powder was carried out at relatively lower temperatures. Titanium dioxide (TiO2) was used as starting material and high purity and nano-sized active carbon as reductive agent. The obtained powder product was subjected to mechanical activation which is for both to make the semi-product more unstable and to decrease the conversion temperature relatively. Homogeneously mixed powders were pressed in a steel die and then the density of green sample was increased with the help of CIPing. In order to determine the conversion temperature, experiments were carried out at three different temperatures under Ar at 1250-1350° for 2h. XRD, SEM and EDS analyses were performed for all yield powders, and the conversion rates were evaluated whether was achieved or not. When the XRD analyses was handled, it could be seen that almost all TiO2 was stayed as stable and no transformation occurred at 1250 °C and 1300 °C. This situation was supported in SEM and EDS analyses. The XRD results showed fully converted TiC structure at 1350 °C. The EDS analysis that the particles were composed of Ti and C elements. Almost fully conversion of Ti2O to TiC powder was achieved at relatively lower temperatures.

International Conference of Advanced Materials and Manufacturing Technologies
ICAMT

Fatih Caliskan Yunus Emre Antika Turgay Tehci Okay Çalışkan