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TEK YÖNLÜ KATILAŞTIRLMIŞ OKSİT MALZEMELERİN MEKANİKSEL DAVRANIŞALARI

MECHANICAL BEHAVIOURS OF UNIDIRECTIONALLY SOLIDIFIED OXIDE MATERIALS

Journal Name:

  • Sigma Mühendislik ve Fen Bilimleri Dergisi

Publication Year:

  • 2007

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
Most conventional ceramics and ceramic composites are produced by using the powder sintering method. For this reason they contain many impurities and there are many cases of amorphous phases forming at grain boundaries. In many cases these amorphous phases and grain boundaries effectively act to increase fracture toughness and strength at room temperature but there are microstructural factors which might cause a deleterious effect on high temperature strength and creep proporties. The oxide ceramic single crystal materials eliminates these microstructural factors by controlling its stable high temperature microstructure. In this paper the microstructural and high temperature behaviours such as the flexural strength, thermal stability and creep characteristics of single crystal oxide materials are examined.
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Abstract (Original Language): 
Pek çok konvansiyonel seramik ve seramik kompozitler toz sinterleme metodu kullanılarak üretilirler. Bu nedenle tane sınırlarında pek çok amorf faz ve empürite bulundururlar. Amorf faz ve tane sınırları oda sıcaklığındaki kırılma tokluğu ve mukavemetin artmasında etkilidirler. Fakat bu mikroyapısal faktörler yüksek sıcaklık mukavemeti ve sürünme karakteristikleri üzerinde zararlı etkiye sahiptirler. Oksit seramik tek kristal malzemeler stabil yüksek sıcaklık mikroyapılarının kontrolü ile bu mikroyapısal faktörleri elimine ederler. Bu çalışmada, tek kristal oksit malzemelerin eğilme mukavemeti, termal stabilite ve sürünme karakteristikleri gibi yüksek sıcaklıktaki mikroyapısal davranışları incelenmiştir.
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  • 2
200-208
  • Turkish

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