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 language | English |
|---|---|
| Pages (from-to) | 1764-1766 |
| Number of pages | 3 |
| Journal | Key Engineering Materials |
| Volume | 368-372 PART 2 |
| DOIs | |
| State | Published - 2008 |
Keywords
- Iron additive
- Mechanical properties
- Microstructure
- ZrC-W composite
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