Microstructure and mechanical properties of ZrB2-SiC composites prepared by gelcasting and pressureless sintering

Rubing Zhang; Rujie He; Xinghong Zhang; Daining Fang

doi:10.1016/j.ijrmhm.2013.11.008

Microstructure and mechanical properties of ZrB₂-SiC composites prepared by gelcasting and pressureless sintering

Rubing Zhang, Rujie He^*, Xinghong Zhang, Daining Fang

^*Corresponding author for this work

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

17 Citations (Scopus)

Abstract

ZrB₂-SiC ceramic composites were prepared through water-based gelcasting and pressureless sintering. Effects of the pressureless sintering temperature (1500-2000 C), heating rate (5-15 C/min) and soaking time (0.5-2 h) on the relative density, microstructure and mechanical properties of the ZrB₂-SiC composites were investigated in detail. A sintering temperature of 2000 C, a heating rate of 5 C/min and a soaking time of 2 h were found to be the optimal pressureless sintering procedure. The relative density, flexural strength and fracture toughness of the ZrB₂-SiC composite prepared under the optimum condition were 97.8%, 403.1 ± 27.8 MPa and 4.05 ± 0.42 MPa·m^1/2, respectively.

Original language	English
Pages (from-to)	83-88
Number of pages	6
Journal	International Journal of Refractory Metals and Hard Materials
Volume	43
DOIs	https://doi.org/10.1016/j.ijrmhm.2013.11.008
Publication status	Published - Mar 2014
Externally published	Yes

Keywords

Composites
Mechanical properties
Microstructure
Pressureless sintering

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10.1016/j.ijrmhm.2013.11.008

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abstract = "ZrB2-SiC ceramic composites were prepared through water-based gelcasting and pressureless sintering. Effects of the pressureless sintering temperature (1500-2000 C), heating rate (5-15 C/min) and soaking time (0.5-2 h) on the relative density, microstructure and mechanical properties of the ZrB2-SiC composites were investigated in detail. A sintering temperature of 2000 C, a heating rate of 5 C/min and a soaking time of 2 h were found to be the optimal pressureless sintering procedure. The relative density, flexural strength and fracture toughness of the ZrB2-SiC composite prepared under the optimum condition were 97.8%, 403.1 ± 27.8 MPa and 4.05 ± 0.42 MPa·m1/2, respectively.",

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AU - Zhang, Rubing

AU - He, Rujie

AU - Zhang, Xinghong

AU - Fang, Daining

PY - 2014/3

Y1 - 2014/3

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AB - ZrB2-SiC ceramic composites were prepared through water-based gelcasting and pressureless sintering. Effects of the pressureless sintering temperature (1500-2000 C), heating rate (5-15 C/min) and soaking time (0.5-2 h) on the relative density, microstructure and mechanical properties of the ZrB2-SiC composites were investigated in detail. A sintering temperature of 2000 C, a heating rate of 5 C/min and a soaking time of 2 h were found to be the optimal pressureless sintering procedure. The relative density, flexural strength and fracture toughness of the ZrB2-SiC composite prepared under the optimum condition were 97.8%, 403.1 ± 27.8 MPa and 4.05 ± 0.42 MPa·m1/2, respectively.

KW - Composites

KW - Mechanical properties

KW - Microstructure

KW - Pressureless sintering

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VL - 43

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JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

ER -

Microstructure and mechanical properties of ZrB₂-SiC composites prepared by gelcasting and pressureless sintering

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Keywords

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