Pressureless sintering of hexagonal boron nitride powders

Ay N., Tore I.

5th International Symposium on Nitrides, Eskişehir, Türkiye, 3 - 05 Nisan 2006, cilt.554, ss.207-208 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 554
  • Doi Numarası: 10.4028/www.scientific.net/msf.554.207
  • Basıldığı Şehir: Eskişehir
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.207-208
  • Anahtar Kelimeler: hexagonal boron nitride, pressureless sintering, additive, characterization, COMPOSITES, BEHAVIOR
  • Anadolu Üniversitesi Adresli: Evet

Özet

Pressureless sintering of hexagonal boron nitride (BN) with and without additives was performed using a powder which was previously nitrided at 900 degrees C and then heat treated at 1400 degrees C. Sintering additives were B2O3 (2, 4, 6 wt %) and Y2O3 (2, 4, 6 wt %) and sintering temperatures was 1900 degrees C. Sintered samples were characterized by XRD, SEM, micro hardness, density and mercury porosimeter measurements. Maximum density values of samples were 1.56 g/cm(3) without additives and 1.63 g/cm(3) with additives. Hardness values of samples were found to improve with the presence of additives.