Effect of in-situ grown SiC nanowires on the mechanical properties of HfC-ZrB2-SiC modified C/C composites

Weiyan Wang; Qiangang Fu; Biyi Tan

doi:10.1016/j.jallcom.2017.08.060

Effect of in-situ grown SiC nanowires on the mechanical properties of HfC-ZrB₂-SiC modified C/C composites

Weiyan Wang
, Qiangang Fu
, Biyi Tan

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

66 Scopus citations

Abstract

In order to improve the strength and toughness of the C/C-HfC-ZrB2-SiC composites, uniformly distributed SiC nanowires were in situ grown in C/C preform using a simple precursor infiltration pyrolysis method with ferrocene as catalyst. The SiC nanowires could greatly refine the size of the ultra-high temperature ceramic (HfC-ZrB2-SiC) particles, and make the ceramic particles interconnected with the unitary body. After introducing SiC nanowires, the flexural strength, flexural modulus and fracture toughness of the composites increased by 21%, 29% and 28% respectively, due to interfacial weakening, the deflection of cracks induced by SiC nanowires and the pullout of SiC nanowires. The C/C-HfC-ZrB2-SiC composites with SiC nanowires also displayed good erosion resistance under high velocity Al₂O₃ particle erosion.

Original language	English
Pages (from-to)	866-874
Number of pages	9
Journal	Journal of Alloys and Compounds
Volume	726
DOIs	https://doi.org/10.1016/j.jallcom.2017.08.060
State	Published - 5 Dec 2017

Keywords

Mechanical properties
Modified C/C composites
Precursor infiltration pyrolysis
SiC nanowires
Ultra-high temperature ceramic

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10.1016/j.jallcom.2017.08.060

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@article{cf2d51e73c7945edbd19a382f4452e84,

title = "Effect of in-situ grown SiC nanowires on the mechanical properties of HfC-ZrB2-SiC modified C/C composites",

abstract = "In order to improve the strength and toughness of the C/C-HfC-ZrB2-SiC composites, uniformly distributed SiC nanowires were in situ grown in C/C preform using a simple precursor infiltration pyrolysis method with ferrocene as catalyst. The SiC nanowires could greatly refine the size of the ultra-high temperature ceramic (HfC-ZrB2-SiC) particles, and make the ceramic particles interconnected with the unitary body. After introducing SiC nanowires, the flexural strength, flexural modulus and fracture toughness of the composites increased by 21\%, 29\% and 28\% respectively, due to interfacial weakening, the deflection of cracks induced by SiC nanowires and the pullout of SiC nanowires. The C/C-HfC-ZrB2-SiC composites with SiC nanowires also displayed good erosion resistance under high velocity Al2O3 particle erosion.",

keywords = "Mechanical properties, Modified C/C composites, Precursor infiltration pyrolysis, SiC nanowires, Ultra-high temperature ceramic",

author = "Weiyan Wang and Qiangang Fu and Biyi Tan",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = dec,

day = "5",

doi = "10.1016/j.jallcom.2017.08.060",

language = "英语",

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TY - JOUR

T1 - Effect of in-situ grown SiC nanowires on the mechanical properties of HfC-ZrB2-SiC modified C/C composites

AU - Wang, Weiyan

AU - Fu, Qiangang

AU - Tan, Biyi

PY - 2017/12/5

Y1 - 2017/12/5

N2 - In order to improve the strength and toughness of the C/C-HfC-ZrB2-SiC composites, uniformly distributed SiC nanowires were in situ grown in C/C preform using a simple precursor infiltration pyrolysis method with ferrocene as catalyst. The SiC nanowires could greatly refine the size of the ultra-high temperature ceramic (HfC-ZrB2-SiC) particles, and make the ceramic particles interconnected with the unitary body. After introducing SiC nanowires, the flexural strength, flexural modulus and fracture toughness of the composites increased by 21%, 29% and 28% respectively, due to interfacial weakening, the deflection of cracks induced by SiC nanowires and the pullout of SiC nanowires. The C/C-HfC-ZrB2-SiC composites with SiC nanowires also displayed good erosion resistance under high velocity Al2O3 particle erosion.

AB - In order to improve the strength and toughness of the C/C-HfC-ZrB2-SiC composites, uniformly distributed SiC nanowires were in situ grown in C/C preform using a simple precursor infiltration pyrolysis method with ferrocene as catalyst. The SiC nanowires could greatly refine the size of the ultra-high temperature ceramic (HfC-ZrB2-SiC) particles, and make the ceramic particles interconnected with the unitary body. After introducing SiC nanowires, the flexural strength, flexural modulus and fracture toughness of the composites increased by 21%, 29% and 28% respectively, due to interfacial weakening, the deflection of cracks induced by SiC nanowires and the pullout of SiC nanowires. The C/C-HfC-ZrB2-SiC composites with SiC nanowires also displayed good erosion resistance under high velocity Al2O3 particle erosion.

KW - Mechanical properties

KW - Modified C/C composites

KW - Precursor infiltration pyrolysis

KW - SiC nanowires

KW - Ultra-high temperature ceramic

UR - https://www.scopus.com/pages/publications/85028302827

U2 - 10.1016/j.jallcom.2017.08.060

DO - 10.1016/j.jallcom.2017.08.060

M3 - 文章

AN - SCOPUS:85028302827

SN - 0925-8388

VL - 726

SP - 866

EP - 874

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Effect of in-situ grown SiC nanowires on the mechanical properties of HfC-ZrB₂-SiC modified C/C composites

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Keywords

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