ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 60, (1) 41 - 47 (2016)


EFFECT OF NdB₆ ADDITION ON DENSIFICATION AND PROPERTIES OF ZrB₂
 
Sonber J.K., Murthy T.S.R.Ch., Sairam K., Chakravartty J.K.
 
Materials Group, Bhabha Atomic Research Centre, Mumbai, India - 400 085

Keywords: ZrB₂, Densification, NdB₆, Hot pressing, Oxidation
 

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.


Record in: Scopus | Web of Science

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doi: 10.13168/cs.2016.0006
 
 
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