Effect of NdB6 addition on densification and properties of ZrB2

J.K. Sonber, T.S.R.Ch Murthy, K. Sairam, J.K. Chakravartty

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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 languageEnglish
Pages (from-to)41-47
JournalCeramics - Silikaty
Issue number1
Publication statusPublished - 8 Feb 2016


  • ZrB2
  • densification
  • NdB6
  • hot pressing
  • oxidation


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