Microstructure and mechanical properties of ZrB2-SiC composites

Qiang Liu; Wenbo Han; Xinghong Zhang; Shuo Wang; Jiecai Han

doi:10.1016/j.matlet.2009.02.054

Microstructure and mechanical properties of ZrB₂-SiC composites

Qiang Liu^*
, Wenbo Han
, Xinghong Zhang
, Shuo Wang
, Jiecai Han

^*Corresponding author for this work

Harbin Institute of Technology

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

69 Scopus citations

Abstract

A ZrB₂-based composite containing 20 vol.% nanosized SiC particles (ZSN) was fabricated at 1900 °C for 30 min under a uniaxed load of 30 MPa by hot-pressing. The microstructure and mechanical properties of the composite were investigated. It was shown that the grain growth of ZrB₂ matrix was effectively suppressed by submicrosized SiC particles located along the grain boundaries. In addition, the mechanical properties of ZSN composite were strongly improved by incorporating the nanosized SiC particles into a ZrB₂ matrix, especially for flexural strength (925 ± 28 MPa) and fracture toughness (6.4 ± 0.3 MPa•m^1/2), which was much higher than that of monolithic ZrB₂ and ZrB₂-based composite with microsized SiC particles, respectively. The formation of intragranular nanostructures plays an important role in the strengthening and toughening of ZrB₂ ceramic. Crown

Original language	English
Pages (from-to)	1323-1325
Number of pages	3
Journal	Materials Letters
Volume	63
Issue number	15
DOIs	https://doi.org/10.1016/j.matlet.2009.02.054
State	Published - 15 Jun 2009

Keywords

Intragranular nanostructure
Mechanical properties
Microstructure
ZrB

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10.1016/j.matlet.2009.02.054

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title = "Microstructure and mechanical properties of ZrB2-SiC composites",

abstract = "A ZrB2-based composite containing 20 vol.\% nanosized SiC particles (ZSN) was fabricated at 1900 °C for 30 min under a uniaxed load of 30 MPa by hot-pressing. The microstructure and mechanical properties of the composite were investigated. It was shown that the grain growth of ZrB2 matrix was effectively suppressed by submicrosized SiC particles located along the grain boundaries. In addition, the mechanical properties of ZSN composite were strongly improved by incorporating the nanosized SiC particles into a ZrB2 matrix, especially for flexural strength (925 ± 28 MPa) and fracture toughness (6.4 ± 0.3 MPa•m1/2), which was much higher than that of monolithic ZrB2 and ZrB2-based composite with microsized SiC particles, respectively. The formation of intragranular nanostructures plays an important role in the strengthening and toughening of ZrB2 ceramic. Crown",

keywords = "Intragranular nanostructure, Mechanical properties, Microstructure, ZrB",

author = "Qiang Liu and Wenbo Han and Xinghong Zhang and Shuo Wang and Jiecai Han",

year = "2009",

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doi = "10.1016/j.matlet.2009.02.054",

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TY - JOUR

T1 - Microstructure and mechanical properties of ZrB2-SiC composites

AU - Liu, Qiang

AU - Han, Wenbo

AU - Zhang, Xinghong

AU - Wang, Shuo

AU - Han, Jiecai

PY - 2009/6/15

Y1 - 2009/6/15

N2 - A ZrB2-based composite containing 20 vol.% nanosized SiC particles (ZSN) was fabricated at 1900 °C for 30 min under a uniaxed load of 30 MPa by hot-pressing. The microstructure and mechanical properties of the composite were investigated. It was shown that the grain growth of ZrB2 matrix was effectively suppressed by submicrosized SiC particles located along the grain boundaries. In addition, the mechanical properties of ZSN composite were strongly improved by incorporating the nanosized SiC particles into a ZrB2 matrix, especially for flexural strength (925 ± 28 MPa) and fracture toughness (6.4 ± 0.3 MPa•m1/2), which was much higher than that of monolithic ZrB2 and ZrB2-based composite with microsized SiC particles, respectively. The formation of intragranular nanostructures plays an important role in the strengthening and toughening of ZrB2 ceramic. Crown

AB - A ZrB2-based composite containing 20 vol.% nanosized SiC particles (ZSN) was fabricated at 1900 °C for 30 min under a uniaxed load of 30 MPa by hot-pressing. The microstructure and mechanical properties of the composite were investigated. It was shown that the grain growth of ZrB2 matrix was effectively suppressed by submicrosized SiC particles located along the grain boundaries. In addition, the mechanical properties of ZSN composite were strongly improved by incorporating the nanosized SiC particles into a ZrB2 matrix, especially for flexural strength (925 ± 28 MPa) and fracture toughness (6.4 ± 0.3 MPa•m1/2), which was much higher than that of monolithic ZrB2 and ZrB2-based composite with microsized SiC particles, respectively. The formation of intragranular nanostructures plays an important role in the strengthening and toughening of ZrB2 ceramic. Crown

KW - Intragranular nanostructure

KW - Mechanical properties

KW - Microstructure

KW - ZrB

UR - https://www.scopus.com/pages/publications/64049108874

U2 - 10.1016/j.matlet.2009.02.054

DO - 10.1016/j.matlet.2009.02.054

M3 - 文章

AN - SCOPUS:64049108874

SN - 0167-577X

VL - 63

SP - 1323

EP - 1325

JO - Materials Letters

JF - Materials Letters

IS - 15

ER -

Microstructure and mechanical properties of ZrB₂-SiC composites

Abstract

Keywords

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