B4C/CeB6 composite ceramic prepared by spark plasma sintering

Chuan Sun*, Yunkai Li, Yunfei Wang, Jianbin Guo, Quanzhen Jiang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Dense B4C matrix composites were synthesized by a spark plasma sintering (SPS) process using CeO2 powder as the sintering aid. The effects of CeO2 on densification and properties of B4C were studied, and it was compared with the specimen without additive. X-ray diffraction and scanning electron microscopy were employed to examine the phase and microstructure of the composites, respectively. The results indicate that the addition of CeO2 powder can significantly improve the sintering property of B4C. The relative density of the samples increases because the generated CeB6 between B4C grains. The specimen with 4wt% CeO2 sintered at 1750℃ under 35 MPa exhibits the highest relative density of 96.7% and Rockwell hardness of 89.6.

Original languageEnglish
Pages (from-to)2071-2074
Number of pages4
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume45
Issue number8
Publication statusPublished - 1 Aug 2016

Keywords

  • Boron carbide
  • Cerium hexaboride
  • Cerium oxide
  • Densification
  • SPS

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