Strengthening/toughening of laminated SiCw/SiC ceramic composites by heat treatment

Yupeng Xie; Laifei Cheng; Liangjun Li; Hui Mei; Litong Zhang

doi:10.1016/j.ceramint.2015.04.087

Strengthening/toughening of laminated SiC_w/SiC ceramic composites by heat treatment

Yupeng Xie, Laifei Cheng, Liangjun Li, Hui Mei, Litong Zhang

School of Materials Sience and Engineering

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

14 Scopus citations

Abstract

Abstract Laminated SiC_w/SiC ceramic composites were prepared by chemical vapor infiltration (CVI) and tape casting, and the effect of heat treatment on mechanical properties of the composites was investigated. By heat-treatment of the whiskers at 1700°C, tensile strength, flexural strength and fracture toughness of the composites were increased obviously. The treatment decreased surface roughness and surface oxygen content of the whiskers, the former increased the strength and the latter increased the toughness. More crack deflection, crack bridging and whisker pull-out were observed on the fracture surface. High-temperature flexural strength of laminated SiC_w/SiC ceramic composites decreased slowly above 1500°C in vacuum atmosphere due to the failure interface of whisker/matrix.

Original language	English
Article number	10494
Pages (from-to)	10024-10029
Number of pages	6
Journal	Ceramics International
Volume	41
Issue number	8
DOIs	https://doi.org/10.1016/j.ceramint.2015.04.087
State	Published - 1 Sep 2015

Keywords

C. Mechanical properties
Heat treatment
Laminated structure
SiC whisker

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10.1016/j.ceramint.2015.04.087

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title = "Strengthening/toughening of laminated SiCw/SiC ceramic composites by heat treatment",

abstract = "Abstract Laminated SiCw/SiC ceramic composites were prepared by chemical vapor infiltration (CVI) and tape casting, and the effect of heat treatment on mechanical properties of the composites was investigated. By heat-treatment of the whiskers at 1700°C, tensile strength, flexural strength and fracture toughness of the composites were increased obviously. The treatment decreased surface roughness and surface oxygen content of the whiskers, the former increased the strength and the latter increased the toughness. More crack deflection, crack bridging and whisker pull-out were observed on the fracture surface. High-temperature flexural strength of laminated SiCw/SiC ceramic composites decreased slowly above 1500°C in vacuum atmosphere due to the failure interface of whisker/matrix.",

keywords = "C. Mechanical properties, Heat treatment, Laminated structure, SiC whisker",

author = "Yupeng Xie and Laifei Cheng and Liangjun Li and Hui Mei and Litong Zhang",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd and Techna Group S.r.l.",

year = "2015",

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doi = "10.1016/j.ceramint.2015.04.087",

language = "英语",

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TY - JOUR

T1 - Strengthening/toughening of laminated SiCw/SiC ceramic composites by heat treatment

AU - Xie, Yupeng

AU - Cheng, Laifei

AU - Li, Liangjun

AU - Mei, Hui

AU - Zhang, Litong

PY - 2015/9/1

Y1 - 2015/9/1

N2 - Abstract Laminated SiCw/SiC ceramic composites were prepared by chemical vapor infiltration (CVI) and tape casting, and the effect of heat treatment on mechanical properties of the composites was investigated. By heat-treatment of the whiskers at 1700°C, tensile strength, flexural strength and fracture toughness of the composites were increased obviously. The treatment decreased surface roughness and surface oxygen content of the whiskers, the former increased the strength and the latter increased the toughness. More crack deflection, crack bridging and whisker pull-out were observed on the fracture surface. High-temperature flexural strength of laminated SiCw/SiC ceramic composites decreased slowly above 1500°C in vacuum atmosphere due to the failure interface of whisker/matrix.

AB - Abstract Laminated SiCw/SiC ceramic composites were prepared by chemical vapor infiltration (CVI) and tape casting, and the effect of heat treatment on mechanical properties of the composites was investigated. By heat-treatment of the whiskers at 1700°C, tensile strength, flexural strength and fracture toughness of the composites were increased obviously. The treatment decreased surface roughness and surface oxygen content of the whiskers, the former increased the strength and the latter increased the toughness. More crack deflection, crack bridging and whisker pull-out were observed on the fracture surface. High-temperature flexural strength of laminated SiCw/SiC ceramic composites decreased slowly above 1500°C in vacuum atmosphere due to the failure interface of whisker/matrix.

KW - C. Mechanical properties

KW - Heat treatment

KW - Laminated structure

KW - SiC whisker

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U2 - 10.1016/j.ceramint.2015.04.087

DO - 10.1016/j.ceramint.2015.04.087

M3 - 文章

AN - SCOPUS:84930932420

SN - 0272-8842

VL - 41

SP - 10024

EP - 10029

JO - Ceramics International

JF - Ceramics International

IS - 8

M1 - 10494

ER -

Strengthening/toughening of laminated SiC_w/SiC ceramic composites by heat treatment

Abstract

Keywords

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