Spark plasma sintering of B4C-SiC composites

Sahin F., APAK B., AKIN İ., KANBUR H. E., GENCKAN D. H., TURAN A., ...Daha Fazla

Solid State Sciences, cilt.14, sa.11-12, ss.1660-1663, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Özet
  • Cilt numarası: 14 Sayı: 11-12
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.solidstatesciences.2012.05.037
  • Dergi Adı: Solid State Sciences
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1660-1663
  • Anahtar Kelimeler: Spark plasma sintering, X-ray methods, B4C, SiC, Microstructure final, MECHANICAL-PROPERTIES, MICROSTRUCTURE, CARBIDE, STRENGTH, B4C
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

B4C-SiC composites were produced using spark plasma sintering (SPS) both reactively from B4C-SiO2-C starting powders and directly from B4C-SiC at 1700 and 1750 °C under a pressure of 40 MPa. Densification, microstructure and mechanical properties of B 4C-SiC composites were investigated. 98.8% relative density was obtained with the addition of Y2O3 in directly spark plasma sintered sample containing 10% SiC at 1750 °C for 5 min. In reactive spark plasma sintering, increasing SiC content resulted in a decrease in density because of the oxidation of SiC to SiO gas phase. The glassy phases formed with Y2O3 addition caused the Vickers hardness values to increase. SiC phase showed a homogenous dispersion in B4C matrix. © 2012 Elsevier Masson SAS. All rights reserved.