Investigation of liquid-phase cermets sinteration effects on properties of Cr3C2/NiCr Sivi faz si̇nterlenme koşullarinin Cr3C2/NiCr sermetleri̇ni̇n özelli̇kleri̇ üzeri̇ne olan etki̇leri̇


Duran C., Eroǧlu Ş.

Ulusal Toz Metalurjisi Konferansi: First National Powder Metallurgy Conference, Ankara, Türkiye, 16 - 17 Eylül 1996, ss.539-549 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: Ankara
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.539-549

Özet

In this study, properties of the Cr3C2/NiCr cermets sintered in the presence of a liquid-phase at 1300°C were investigated as a function of time (15,30 minutes) and carbide content (75-95 wt%) at a constant Ni to Cr ratio of 4. Densities of the compacts increased with increasing metallic binder content and reached 100% of theoretical density. X-ray analysis showed that Cr3C2/NiCr samples consisted of almost pure Cr3C2 and a NiCr-rich binder phase. SEM studies revealed that metallic binder phase did not surround the carbide particles completely and it was distributed as separate islands in the skeleton of the carbide phase. Abnormal and anisotropic growths of some carbide grains were observed in the samples of higher metallic binder. Transverse rupture strengths of the samples were also studied and it was found that transverse rupture strength decreased with a decrease in the metallic binder content.