Preparation and characterization of high-toughness ZrB2/Mo composites by hot-pressing process

Hailong Wang; Deliang Chen; Chang An Wang; Rui Zhang; Daining Fang

doi:10.1016/j.ijrmhm.2009.06.003

Preparation and characterization of high-toughness ZrB₂/Mo composites by hot-pressing process

Hailong Wang^*, Deliang Chen, Chang An Wang, Rui Zhang, Daining Fang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

69 Citations (Scopus)

Abstract

ZrB₂/Mo composites with various volume fractions of Mo (0-10%) were prepared by a hot-pressing process at 1950 °C. The addition of Mo both facilitated the densification and improved the mechanical properties of the ZrB₂/Mo composites. Compared with the pure ZrB₂ ceramics, the fracture toughness of the ZrB₂/Mo (10%) composite increased from 4.52 to 7.98 MPa m^1/2 and its bending strength increased from 424 to 450 MPa. The enhancement in mechanical properties of the ZrB₂/Mo composites could be attributed to the reduced grains and the MoB phase formed in the reaction between ZrB₂ and Mo.

Original language	English
Pages (from-to)	1024-1026
Number of pages	3
Journal	International Journal of Refractory Metals and Hard Materials
Volume	27
Issue number	6
DOIs	https://doi.org/10.1016/j.ijrmhm.2009.06.003
Publication status	Published - Nov 2009
Externally published	Yes

Keywords

Hot-pressed sintering
Mechanical properties
Molybdenum
Ultra-high temperature ceramics
Zirconium diboride

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10.1016/j.ijrmhm.2009.06.003

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title = "Preparation and characterization of high-toughness ZrB2/Mo composites by hot-pressing process",

abstract = "ZrB2/Mo composites with various volume fractions of Mo (0-10%) were prepared by a hot-pressing process at 1950 °C. The addition of Mo both facilitated the densification and improved the mechanical properties of the ZrB2/Mo composites. Compared with the pure ZrB2 ceramics, the fracture toughness of the ZrB2/Mo (10%) composite increased from 4.52 to 7.98 MPa m1/2 and its bending strength increased from 424 to 450 MPa. The enhancement in mechanical properties of the ZrB2/Mo composites could be attributed to the reduced grains and the MoB phase formed in the reaction between ZrB2 and Mo.",

keywords = "Hot-pressed sintering, Mechanical properties, Molybdenum, Ultra-high temperature ceramics, Zirconium diboride",

author = "Hailong Wang and Deliang Chen and Wang, {Chang An} and Rui Zhang and Daining Fang",

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volume = "27",

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T1 - Preparation and characterization of high-toughness ZrB2/Mo composites by hot-pressing process

AU - Wang, Hailong

AU - Chen, Deliang

AU - Wang, Chang An

AU - Zhang, Rui

AU - Fang, Daining

PY - 2009/11

Y1 - 2009/11

N2 - ZrB2/Mo composites with various volume fractions of Mo (0-10%) were prepared by a hot-pressing process at 1950 °C. The addition of Mo both facilitated the densification and improved the mechanical properties of the ZrB2/Mo composites. Compared with the pure ZrB2 ceramics, the fracture toughness of the ZrB2/Mo (10%) composite increased from 4.52 to 7.98 MPa m1/2 and its bending strength increased from 424 to 450 MPa. The enhancement in mechanical properties of the ZrB2/Mo composites could be attributed to the reduced grains and the MoB phase formed in the reaction between ZrB2 and Mo.

AB - ZrB2/Mo composites with various volume fractions of Mo (0-10%) were prepared by a hot-pressing process at 1950 °C. The addition of Mo both facilitated the densification and improved the mechanical properties of the ZrB2/Mo composites. Compared with the pure ZrB2 ceramics, the fracture toughness of the ZrB2/Mo (10%) composite increased from 4.52 to 7.98 MPa m1/2 and its bending strength increased from 424 to 450 MPa. The enhancement in mechanical properties of the ZrB2/Mo composites could be attributed to the reduced grains and the MoB phase formed in the reaction between ZrB2 and Mo.

KW - Hot-pressed sintering

KW - Mechanical properties

KW - Molybdenum

KW - Ultra-high temperature ceramics

KW - Zirconium diboride

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VL - 27

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JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

IS - 6

ER -

Preparation and characterization of high-toughness ZrB₂/Mo composites by hot-pressing process

Abstract

Keywords

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