Oxidation and mechanical properties of SiCf/BN/SiBcN composite at high temperature

Zhongmin Li; Xun Zhang; Philip J. Withers; Ping Xiao; Wei Liu; Qi Li; Xue Cao; Lamei Cao

Oxidation and mechanical properties of SiCf/BN/SiBcN composite at high temperature

Zhongmin Li, Xun Zhang, Philip J. Withers, Ping Xiao, Wei Liu, Qi Li, Xue Cao, Lamei Cao

Beijing Institute of Aeronautical Materials

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

The oxidation and mechanical properties of SiC/BN/SiBCN ceramic composites made by the polymer infiltration pyrolysis (PIP) before and after high temperature treatment in air at 1200^oC, 1350^oC and 1500^oC for 30h were investigated. The flexural strength of the composite as measured using three-point bending testing and was found to decrease from 280±15MPa to 165±36MPa after the composite was oxidized at 1500^oC for 30h. Oxidation of SiC/BN/SiBCN results in the formation of SiO2. SiBCN matrix becomes porous after oxidation and it is more apparent after oxidation at 1350 and 1500^oC. This might be caused by the evaporation of B2O3, which is the oxidation product of BN. Meanwhile, B2O3 formed in the interphase layer can react with SiO2 and form borosilicate. The subsequent evaporation of B2O3 leaves silicate in the fiber/matrix interphase, increasing the bonding strength in the fiber/matrix area and resulting in the brittle breaking behavior of the composites after oxidation.

Original language	English
Title of host publication	18th European Conference on Composite Materials
Subtitle of host publication	ECCM-2018
Publisher	Applied Mechanics Laboratory
ISBN (Electronic)	9781510896932
Publication status	Published - 2020
Event	18th European Conference on Composite Materials, ECCM 2018 - Athens, Greece Duration: 24 Jun 2018 → 28 Jun 2018

Conference

Conference	18th European Conference on Composite Materials, ECCM 2018
Country/Territory	Greece
City	Athens
Period	24/06/18 → 28/06/18

Keywords

composite
high temperature
mechanical properties
microstructure
oxidation

Cite this

@inproceedings{5a6abc4cf2c84469951a33ebb2a42960,

title = "Oxidation and mechanical properties of SiCf/BN/SiBcN composite at high temperature",

abstract = "The oxidation and mechanical properties of SiC/BN/SiBCN ceramic composites made by the polymer infiltration pyrolysis (PIP) before and after high temperature treatment in air at 1200oC, 1350oC and 1500oC for 30h were investigated. The flexural strength of the composite as measured using three-point bending testing and was found to decrease from 280±15MPa to 165±36MPa after the composite was oxidized at 1500oC for 30h. Oxidation of SiC/BN/SiBCN results in the formation of SiO2. SiBCN matrix becomes porous after oxidation and it is more apparent after oxidation at 1350 and 1500oC. This might be caused by the evaporation of B2O3, which is the oxidation product of BN. Meanwhile, B2O3 formed in the interphase layer can react with SiO2 and form borosilicate. The subsequent evaporation of B2O3 leaves silicate in the fiber/matrix interphase, increasing the bonding strength in the fiber/matrix area and resulting in the brittle breaking behavior of the composites after oxidation.",

keywords = "composite, high temperature, mechanical properties, microstructure, oxidation",

author = "Zhongmin Li and Xun Zhang and Withers, {Philip J.} and Ping Xiao and Wei Liu and Qi Li and Xue Cao and Lamei Cao",

note = "Publisher Copyright: {\textcopyright} CCM 2020 - 18th European Conference on Composite Materials. All rights reserved.; 18th European Conference on Composite Materials, ECCM 2018 ; Conference date: 24-06-2018 Through 28-06-2018",

year = "2020",

language = "English",

booktitle = "18th European Conference on Composite Materials",

publisher = "Applied Mechanics Laboratory",

address = "Not specified",

}

TY - GEN

T1 - Oxidation and mechanical properties of SiCf/BN/SiBcN composite at high temperature

AU - Li, Zhongmin

AU - Zhang, Xun

AU - Withers, Philip J.

AU - Xiao, Ping

AU - Liu, Wei

AU - Li, Qi

AU - Cao, Xue

AU - Cao, Lamei

PY - 2020

Y1 - 2020

N2 - The oxidation and mechanical properties of SiC/BN/SiBCN ceramic composites made by the polymer infiltration pyrolysis (PIP) before and after high temperature treatment in air at 1200oC, 1350oC and 1500oC for 30h were investigated. The flexural strength of the composite as measured using three-point bending testing and was found to decrease from 280±15MPa to 165±36MPa after the composite was oxidized at 1500oC for 30h. Oxidation of SiC/BN/SiBCN results in the formation of SiO2. SiBCN matrix becomes porous after oxidation and it is more apparent after oxidation at 1350 and 1500oC. This might be caused by the evaporation of B2O3, which is the oxidation product of BN. Meanwhile, B2O3 formed in the interphase layer can react with SiO2 and form borosilicate. The subsequent evaporation of B2O3 leaves silicate in the fiber/matrix interphase, increasing the bonding strength in the fiber/matrix area and resulting in the brittle breaking behavior of the composites after oxidation.

AB - The oxidation and mechanical properties of SiC/BN/SiBCN ceramic composites made by the polymer infiltration pyrolysis (PIP) before and after high temperature treatment in air at 1200oC, 1350oC and 1500oC for 30h were investigated. The flexural strength of the composite as measured using three-point bending testing and was found to decrease from 280±15MPa to 165±36MPa after the composite was oxidized at 1500oC for 30h. Oxidation of SiC/BN/SiBCN results in the formation of SiO2. SiBCN matrix becomes porous after oxidation and it is more apparent after oxidation at 1350 and 1500oC. This might be caused by the evaporation of B2O3, which is the oxidation product of BN. Meanwhile, B2O3 formed in the interphase layer can react with SiO2 and form borosilicate. The subsequent evaporation of B2O3 leaves silicate in the fiber/matrix interphase, increasing the bonding strength in the fiber/matrix area and resulting in the brittle breaking behavior of the composites after oxidation.

KW - composite

KW - high temperature

KW - mechanical properties

KW - microstructure

KW - oxidation

UR - http://www.scopus.com/inward/record.url?scp=85084162396&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85084162396

BT - 18th European Conference on Composite Materials

PB - Applied Mechanics Laboratory

T2 - 18th European Conference on Composite Materials, ECCM 2018

Y2 - 24 June 2018 through 28 June 2018

ER -

Oxidation and mechanical properties of SiCf/BN/SiBcN composite at high temperature

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Keywords

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