Spark plasma sintering and characterization of ZrC-TiB2 composites


Ozturk O. O. , Göller G.

CERAMICS INTERNATIONAL, cilt.43, ss.8475-8481, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 43 Konu: 11
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1016/j.ceramint.2017.03.199
  • Dergi Adı: CERAMICS INTERNATIONAL
  • Sayfa Sayıları: ss.8475-8481

Özet

ZrC-based composites were consolidated from ZrC and TiB2 powders by the Spark Plasma Sintering (SPS) technique at 1685 degrees C and 1700 degrees C for 300 s under 40-50-60 MPa. Densification, crystalline phases, microstructure, mechanical properties and oxidation behavior of the composites were investigated. The sintered bodies were composed of a (Zr,Ti)C solid solution and a ZrB phase. The densification behaviors of the composites were improved by increasing the TiB2 content and applied pressure. The highest value of hardness, 21.64 GPa, was attained with the addition of 30 vol% TiB2. Oxidation tests were performed at 900 degrees C for 2 h and the formation of ZrO2, TiO2 and B2O3 phases were identified by using XRD.