Fabrication and mechanical properties of laminated HfC-SiC/BN ceramics

Liuyi Xiang; Laifei Cheng; Yi Hou; Fuyuan Wang; Liangjun Li; Litong Zhang

doi:10.1016/j.jeurceramsoc.2014.04.021

Fabrication and mechanical properties of laminated HfC-SiC/BN ceramics

Liuyi Xiang
, Laifei Cheng
, Yi Hou
, Fuyuan Wang
, Liangjun Li
, Litong Zhang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

41 Scopus citations

Abstract

Laminated HfC-SiC/BN ceramics were successfully fabricated by tape casting and hot pressing. Fully dense HfC-SiC ultra-high temperature ceramics with homogeneous structure were obtained. The introduction of the weak BN layer resulted in a slight decrease of the flexural strength but significantly improved the fracture toughness compared with monolithic HfC-SiC ceramics. The fracture toughness of laminated HfC-SiC/BN ceramics in the parallel direction peaked at 8.06±0.46MPam^1/2, which increased by 115% than that of monolithic HfC-SiC ceramics. The composites showed non-catastrophic fracture behaviors in both parallel and perpendicular directions. It indicates that laminated structure design is a promising approach to obtain full density HfC-SiC ceramics with high fracture toughness.

Original language	English
Pages (from-to)	3635-3640
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	34
Issue number	15
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2014.04.021
State	Published - Dec 2014

Keywords

Hot pressing
Laminated HfC-SiC ceramics
Mechanical properties
Microstructure

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10.1016/j.jeurceramsoc.2014.04.021

Cite this

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title = "Fabrication and mechanical properties of laminated HfC-SiC/BN ceramics",

abstract = "Laminated HfC-SiC/BN ceramics were successfully fabricated by tape casting and hot pressing. Fully dense HfC-SiC ultra-high temperature ceramics with homogeneous structure were obtained. The introduction of the weak BN layer resulted in a slight decrease of the flexural strength but significantly improved the fracture toughness compared with monolithic HfC-SiC ceramics. The fracture toughness of laminated HfC-SiC/BN ceramics in the parallel direction peaked at 8.06±0.46MPam1/2, which increased by 115\% than that of monolithic HfC-SiC ceramics. The composites showed non-catastrophic fracture behaviors in both parallel and perpendicular directions. It indicates that laminated structure design is a promising approach to obtain full density HfC-SiC ceramics with high fracture toughness.",

keywords = "Hot pressing, Laminated HfC-SiC ceramics, Mechanical properties, Microstructure",

author = "Liuyi Xiang and Laifei Cheng and Yi Hou and Fuyuan Wang and Liangjun Li and Litong Zhang",

year = "2014",

month = dec,

doi = "10.1016/j.jeurceramsoc.2014.04.021",

language = "英语",

volume = "34",

pages = "3635--3640",

journal = "Journal of the European Ceramic Society",

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}

TY - JOUR

T1 - Fabrication and mechanical properties of laminated HfC-SiC/BN ceramics

AU - Xiang, Liuyi

AU - Cheng, Laifei

AU - Hou, Yi

AU - Wang, Fuyuan

AU - Li, Liangjun

AU - Zhang, Litong

PY - 2014/12

Y1 - 2014/12

N2 - Laminated HfC-SiC/BN ceramics were successfully fabricated by tape casting and hot pressing. Fully dense HfC-SiC ultra-high temperature ceramics with homogeneous structure were obtained. The introduction of the weak BN layer resulted in a slight decrease of the flexural strength but significantly improved the fracture toughness compared with monolithic HfC-SiC ceramics. The fracture toughness of laminated HfC-SiC/BN ceramics in the parallel direction peaked at 8.06±0.46MPam1/2, which increased by 115% than that of monolithic HfC-SiC ceramics. The composites showed non-catastrophic fracture behaviors in both parallel and perpendicular directions. It indicates that laminated structure design is a promising approach to obtain full density HfC-SiC ceramics with high fracture toughness.

AB - Laminated HfC-SiC/BN ceramics were successfully fabricated by tape casting and hot pressing. Fully dense HfC-SiC ultra-high temperature ceramics with homogeneous structure were obtained. The introduction of the weak BN layer resulted in a slight decrease of the flexural strength but significantly improved the fracture toughness compared with monolithic HfC-SiC ceramics. The fracture toughness of laminated HfC-SiC/BN ceramics in the parallel direction peaked at 8.06±0.46MPam1/2, which increased by 115% than that of monolithic HfC-SiC ceramics. The composites showed non-catastrophic fracture behaviors in both parallel and perpendicular directions. It indicates that laminated structure design is a promising approach to obtain full density HfC-SiC ceramics with high fracture toughness.

KW - Hot pressing

KW - Laminated HfC-SiC ceramics

KW - Mechanical properties

KW - Microstructure

UR - https://www.scopus.com/pages/publications/84905509818

U2 - 10.1016/j.jeurceramsoc.2014.04.021

DO - 10.1016/j.jeurceramsoc.2014.04.021

M3 - 文章

AN - SCOPUS:84905509818

SN - 0955-2219

VL - 34

SP - 3635

EP - 3640

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 15

ER -

Fabrication and mechanical properties of laminated HfC-SiC/BN ceramics

Abstract

Keywords

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