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Effect of iron additive on the sintering behavior of hot-pressed ZrC-W composites

  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

The ZrC-W composites with iron as sintering additive were fabricated by hot-press sintering. The densification, microstructure and mechanical properties of the composites were investigated. The incorporation of Fe beneficially promotes the densification of ZrC-W composites. The relative density of the composite sintered at 1900°C can attain 95.3%. W2C phase is also found in the ZrC-W composite sintered at 1700°C The content of W 2C decreases with the increase of sintering temperature. However, W2C phase is not identified in the composite sintered at 1900°C The flexural strength and fracture toughness of the composites are strongly dependent on sintering temperature. The flexural strength and fracture toughness of ZrC-W composite sintered at optimized temperature of 1800°C are 438 MPa and 3.99 MPa·m1/2, respectively.

Original languageEnglish
Pages (from-to)1764-1766
Number of pages3
JournalKey Engineering Materials
Volume368-372 PART 2
DOIs
StatePublished - 2008

Keywords

  • Iron additive
  • Mechanical properties
  • Microstructure
  • ZrC-W composite

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