Microstructure and mechanical properties of ZrB2-based ceramics

Xing Hong Zhang; Ping Hu; Song He Meng; Jie Cai Han; Bao Lin Wang

doi:10.4028/0-87849-994-6.287

Microstructure and mechanical properties of ZrB₂-based ceramics

Xing Hong Zhang, Ping Hu, Song He Meng, Jie Cai Han, Bao Lin Wang

Harbin Institute of Technology

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

10 Citations (Scopus)

Abstract

Two ZrB₂-based composites were fabricated by hot-pressing with vacuum. ZrB₂+20vol%SiC and ZrB₂+20vol%SiC+8vol%TiB ₂ were selected as the starting compositions. The microstructures and phase constitutions of the composites were investigated and compared to these of monolithic ZrB₂ material. For the ZrB₂-based composites, with the addition of SiC particles, the excessive growth of ZrB ₂ materials is restricted and grain structure is refined. Meanwhile the fracture modes are changed, namely, from transgranular to mixed inter/transgranular. Strengthening mechanism is grain refining and the toughening mechanism is crack deflection, crack branching and grain refining. The role of TiB₂ as an addition to the ZrB₂ matrix was also examined and discussed.

Original language	English
Pages (from-to)	287-292
Number of pages	6
Journal	Key Engineering Materials
Volume	312
DOIs	https://doi.org/10.4028/0-87849-994-6.287
Publication status	Published - 2006
Externally published	Yes

Keywords

Hot pressing
Mechanical properties
Microstructure
SiC
TiB
ZrB

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10.4028/0-87849-994-6.287

Cite this

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title = "Microstructure and mechanical properties of ZrB2-based ceramics",

abstract = "Two ZrB2-based composites were fabricated by hot-pressing with vacuum. ZrB2+20vol%SiC and ZrB2+20vol%SiC+8vol%TiB 2 were selected as the starting compositions. The microstructures and phase constitutions of the composites were investigated and compared to these of monolithic ZrB2 material. For the ZrB2-based composites, with the addition of SiC particles, the excessive growth of ZrB 2 materials is restricted and grain structure is refined. Meanwhile the fracture modes are changed, namely, from transgranular to mixed inter/transgranular. Strengthening mechanism is grain refining and the toughening mechanism is crack deflection, crack branching and grain refining. The role of TiB2 as an addition to the ZrB2 matrix was also examined and discussed.",

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author = "Zhang, {Xing Hong} and Ping Hu and Meng, {Song He} and Han, {Jie Cai} and Wang, {Bao Lin}",

year = "2006",

doi = "10.4028/0-87849-994-6.287",

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pages = "287--292",

journal = "Key Engineering Materials",

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T1 - Microstructure and mechanical properties of ZrB2-based ceramics

AU - Zhang, Xing Hong

AU - Hu, Ping

AU - Meng, Song He

AU - Han, Jie Cai

AU - Wang, Bao Lin

PY - 2006

Y1 - 2006

N2 - Two ZrB2-based composites were fabricated by hot-pressing with vacuum. ZrB2+20vol%SiC and ZrB2+20vol%SiC+8vol%TiB 2 were selected as the starting compositions. The microstructures and phase constitutions of the composites were investigated and compared to these of monolithic ZrB2 material. For the ZrB2-based composites, with the addition of SiC particles, the excessive growth of ZrB 2 materials is restricted and grain structure is refined. Meanwhile the fracture modes are changed, namely, from transgranular to mixed inter/transgranular. Strengthening mechanism is grain refining and the toughening mechanism is crack deflection, crack branching and grain refining. The role of TiB2 as an addition to the ZrB2 matrix was also examined and discussed.

AB - Two ZrB2-based composites were fabricated by hot-pressing with vacuum. ZrB2+20vol%SiC and ZrB2+20vol%SiC+8vol%TiB 2 were selected as the starting compositions. The microstructures and phase constitutions of the composites were investigated and compared to these of monolithic ZrB2 material. For the ZrB2-based composites, with the addition of SiC particles, the excessive growth of ZrB 2 materials is restricted and grain structure is refined. Meanwhile the fracture modes are changed, namely, from transgranular to mixed inter/transgranular. Strengthening mechanism is grain refining and the toughening mechanism is crack deflection, crack branching and grain refining. The role of TiB2 as an addition to the ZrB2 matrix was also examined and discussed.

KW - Hot pressing

KW - Mechanical properties

KW - Microstructure

KW - SiC

KW - TiB

KW - ZrB

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VL - 312

SP - 287

EP - 292

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

Microstructure and mechanical properties of ZrB₂-based ceramics

Abstract

Keywords

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