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Long-term oxidation behavior of C/SiC-SiBCN composites in wet oxygen environment

Luan, Xin’gang ; Xu, Xinming ; Wang, Lei ; Zou, Yun ; Riedel, Ralf ; Cheng, Laifei (2021):
Long-term oxidation behavior of C/SiC-SiBCN composites in wet oxygen environment.
In: Journal of the European Ceramic Society, 41 (2), pp. 1132-1141. Elsevier, ISSN 09552219, e-ISSN 1873-619X,
DOI: 10.1016/j.jeurceramsoc.2020.09.058,
[Article]

Abstract

Polymer derived SiBCN ceramic was introduced into carbon fiber reinforced SiC composites to prepare C/SiC-SiBCN composites. Weight change and flexural strength of the samples after oxidation at different temperatures and in different atmospheres were tested up to 100 h to investigate their wet oxidation behavior. It was found that the stable silicoboron glassy self-healing phase formed from the oxidation of SiBCN had favorable oxidation resistance in wet oxygen atmosphere. And the SiC-SiBCN matrix can provide about 50 h of protection for carbon fiber in wet oxygen. Besides, the influence of temperature on the oxidation behavior of C/SiC-SiBCN composites were much related to the release speed of gas products (B2O3, HBO2 and Si(OH)(4)). And the oxidation mechanism of SiC/SiC-SiBCN composites were further explained by the comparation with C/SiC-SiBCN composites.

Item Type: Article
Erschienen: 2021
Creators: Luan, Xin’gang ; Xu, Xinming ; Wang, Lei ; Zou, Yun ; Riedel, Ralf ; Cheng, Laifei
Title: Long-term oxidation behavior of C/SiC-SiBCN composites in wet oxygen environment
Language: English
Abstract:

Polymer derived SiBCN ceramic was introduced into carbon fiber reinforced SiC composites to prepare C/SiC-SiBCN composites. Weight change and flexural strength of the samples after oxidation at different temperatures and in different atmospheres were tested up to 100 h to investigate their wet oxidation behavior. It was found that the stable silicoboron glassy self-healing phase formed from the oxidation of SiBCN had favorable oxidation resistance in wet oxygen atmosphere. And the SiC-SiBCN matrix can provide about 50 h of protection for carbon fiber in wet oxygen. Besides, the influence of temperature on the oxidation behavior of C/SiC-SiBCN composites were much related to the release speed of gas products (B2O3, HBO2 and Si(OH)(4)). And the oxidation mechanism of SiC/SiC-SiBCN composites were further explained by the comparation with C/SiC-SiBCN composites.

Journal or Publication Title: Journal of the European Ceramic Society
Journal volume: 41
Number: 2
Publisher: Elsevier
Uncontrolled Keywords: C/SiC; SiBCN; Oxidation resistance; Self-healing CERAMIC-MATRIX COMPOSITES; SILICON-CARBIDE; PROTECTION
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 18 Jan 2021 06:38
DOI: 10.1016/j.jeurceramsoc.2020.09.058
Official URL: https://doi.org/10.1016/j.jeurceramsoc.2020.09.058
Additional Information:

Research Fund of the National Key Technologies RD Program, Grant Number 2017YFB0703200. National Natural Science Foundation of China (NSFC), Grant Numbers 51821091, 51872229, 91960105. State Key Laboratory of Solidification Processing (NWPU), China, Grant Number 135-QP-2015

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