Effect of NdB6 addition on densification and properties of ZrB2

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

doi:10.13168/cs.2016.0006

Effect of NdB6 addition on densification and properties of ZrB2

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

Metallurgy and Materials

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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
Pages (from-to)	41-47
Journal	Ceramics - Silikaty
Volume	60
Issue number	1
DOIs	https://doi.org/10.13168/cs.2016.0006
Publication status	Published - 8 Feb 2016

Keywords

ZrB2
densification
NdB6
hot pressing
oxidation

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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.",

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AU - Sonber, J.K.

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PY - 2016/2/8

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N2 - 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.

AB - 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.

KW - ZrB2

KW - densification

KW - NdB6

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KW - oxidation

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Effect of NdB6 addition on densification and properties of ZrB2

Abstract

Keywords

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