Influence of TiB2 and CrB2 on densification, microstructure, and mechanical properties of ZrB2 ceramics

Jin-Hao Yuan, Wei-Ming Guo, Qiu-Yu Liu, Yan Zhang, Li-Xiang Wu, Yang You, Shi-Kuan Sun, Mingwen Bai, Hua-Tay Lin

Research output: Contribution to journalArticlepeer-review

Abstract

The sinterability, microstructure, and mechanical properties of pure TiB2- and CrB2-doped ZrB2 prepared by spark plasma sintering were investigated. The solid solutions were synthesized by the complete borothermal reduction to form (Zr0.95Ti0.05)B2 and (Zr0.95Cr0.05)B2. The results showed that the solid solution of (Zr0.95Ti0.05)B2 yielded the smaller particle size than that of (Zr0.95Cr0.05)B2. The sinterability was also improved with the use of the solid solutions, as evidenced by an increase of relative density but at the cost of coarsened microstructure. Overall, (Zr0.95Cr0.05)B2 possessed significantly higher relative density and Vickers hardness than ZrB2 and (Zr0.95Ti0.05)B2.
Original languageEnglish
Pages (from-to)28008-28013
Number of pages6
JournalCeramics International
Volume47
Issue number19
Early online date21 Jun 2021
DOIs
Publication statusPublished - Oct 2021

Funder

This work was financially supported by National Natural Science Foundation of China (No. 51832002 , 51402055 , 51602060 and U1401247 ).

Keywords

  • ZrB ceramics
  • Densification
  • Microstructure
  • Mechanical properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Process Chemistry and Technology

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