Effect of BN Short Fiber Content on Mechanical Properties of ZrB2-SiC UHTCs

Chang Ling Zhou; Yan Yan Wang; Zhi Qiang Cheng; Chong Hai Wang; Rui Xiang Liu

doi:10.4028/www.scientific.net/KEM.512-515.706

Paper Titles

Microstructures, Properties and Fracture Behavior of Solidified TiC-TiB₂ Composites with Increasing Content of TiB₂
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Crystal Growth, Fracture Behavior and Toughening of Rapidly-Solidified TiC-TiB₂ Prepared by Combustion Synthesis in High-Gravity Field
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Theoretical Calculation of Crystal Cohesive Energy of (ZrTi)B₂ Solid-Solutions
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Tailoring Plate-Like Grained ZrB₂ Ceramic via a Strong Magnetic Field Alignment Method Followed by Spark Plasma Sintering
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Effect of BN Short Fiber Content on Mechanical Properties of ZrB₂-SiC UHTCs
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Ablation Property of ZrB₂-SiC Composite Sharp Leading Edges with Varying Radiuses of Curvature under Oxy-Acetylene Torch
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Fabrication of ZrC-SiC Powders by Means of Liquid Precursor Conversion Method Using ZrC Precursor and Polycarbosilane
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Preparation and Assessment of C/C-ZrB₂-SiC Ultra-High Temperature Ceramics
p.719

Effect of High-Energy Ball Milling of ZrB₂ Powder on the Microstructure and Mechanical Properties of ZrB₂-SiC Ceramics
p.723

HomeKey Engineering MaterialsKey Engineering Materials Vols. 512-515Effect of BN Short Fiber Content on Mechanical...

Effect of BN Short Fiber Content on Mechanical Properties of ZrB₂-SiC UHTCs

Abstract:

ZrB₂-20%volSiC ceramic composites with different volume of BN short fiber were fabricated by the hot-pressing sintering under 2000°C. The content of BN short fiber changed from 0 to 15vol%. The density, flexural strength, fracture toughness and thermal expansions coefficient were studied. The microstructures of the samples were observed by scanning electron microscopy. The results show that the introducing of BN short fiber into the ZrB₂-20%volSiC lead to a serious of change to the mechanical properties of the ceramic. When the content of the BN short fiber is 10vol%, the flexural strength and fracture toughness reach 422.1MPa and 6.15 MPa•m ^1/2 respectively. And the mechanism of the increasing toughness was studied.

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Periodical:

Key Engineering Materials (Volumes 512-515)

Pages:

706-709

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.512-515.706

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Online since:

June 2012

Authors:

Chang Ling Zhou, Yan Yan Wang, Zhi Qiang Cheng, Chong Hai Wang, Rui Xiang Liu

Keywords:

BN Short Fiber, Hot-Pressing Sintering, Mechanical Property

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