Abstract
This paper reports on the effect of NdB₆ addition on densification and properties of ZrB₂. NdB₆ powder (2.5,5 and 10wt.%) was added to ZrB₂ powder and consolidated by hot pressing. It was found that NdB₆ addition assisted in densification of ZrB₂ at lower hot pressing temperature of 1750°C. Formation of solid solution was observed at the interface of ZrB₂ and NdB₆ phases. Hardness was found to be slightly increased by 2.5wt.% NdB₆ addition but decreased by 5 and 10% NdB₆ addition. Fracture toughness of composite is found to be higher than the monolithic ceramic. It was found that composite samples have excellent oxidation resistance at 900°C in air.
Original language | English |
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Pages (from-to) | 41-47 |
Journal | Ceramics - Silikaty |
Volume | 60 |
Issue number | 1 |
DOIs | |
Publication status | Published - 8 Feb 2016 |
Keywords
- ZrB2
- densification
- NdB6
- hot pressing
- oxidation