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Wet oxidation behavior of SiC/(SiC- SiBCN)x composites prepared by CVI combined with PIOP process

Luan, Xin’gang and Xu, Xinming and Zou, Yun and Wang, Lei and Cheng, Laifei and Riedel, Ralf (2019):
Wet oxidation behavior of SiC/(SiC- SiBCN)x composites prepared by CVI combined with PIOP process.
In: Journal of the American Ceramic Society, Wiley, pp. 6239-6255, 102, (10), ISSN 00027820,
DOI: 10.1111/jace.16497,
[Online-Edition: https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/ja...],
[Article]

Abstract

Self-healing capability in wet oxygen atmospheres is the key issue for long term service of SiC/SiC composites in aero-engines. Polymer derived SiBCN ceramic (PDC SiBCN) was introduced into SiC fiber reinforced SiC as a self-healing component to obtain SiC/(SiC-SiBCN)x composites by a newly developed method, namely chemical vapor infiltration combined with polymer infiltration online pyrolysis (CVI + PIOP) process. The weight loss behavior and three-point bending performance of the samples under different temperatures (1200, 1300 and 1400 degrees C) and different wet oxygen partial pressures were tested up to 100 hours to demonstrate the oxidation behavior of the samples in wet oxygen environments. According to these tests, the antioxidant capacities of samples prepared from different preforms were compared. It has been found that the 2D plain weave samples with higher density have the best resistance to wet oxygen corrosion while the 2D plain weave samples have the worst resistance to wet oxidation and the antioxidant capacities of 2D satin weave samples is between them.

Item Type: Article
Erschienen: 2019
Creators: Luan, Xin’gang and Xu, Xinming and Zou, Yun and Wang, Lei and Cheng, Laifei and Riedel, Ralf
Title: Wet oxidation behavior of SiC/(SiC- SiBCN)x composites prepared by CVI combined with PIOP process
Language: English
Abstract:

Self-healing capability in wet oxygen atmospheres is the key issue for long term service of SiC/SiC composites in aero-engines. Polymer derived SiBCN ceramic (PDC SiBCN) was introduced into SiC fiber reinforced SiC as a self-healing component to obtain SiC/(SiC-SiBCN)x composites by a newly developed method, namely chemical vapor infiltration combined with polymer infiltration online pyrolysis (CVI + PIOP) process. The weight loss behavior and three-point bending performance of the samples under different temperatures (1200, 1300 and 1400 degrees C) and different wet oxygen partial pressures were tested up to 100 hours to demonstrate the oxidation behavior of the samples in wet oxygen environments. According to these tests, the antioxidant capacities of samples prepared from different preforms were compared. It has been found that the 2D plain weave samples with higher density have the best resistance to wet oxygen corrosion while the 2D plain weave samples have the worst resistance to wet oxidation and the antioxidant capacities of 2D satin weave samples is between them.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 102
Number: 10
Publisher: Wiley
Uncontrolled Keywords: Anti-oxidation; CVI plus PIOP; Self-healing; SiBCN; SiC; SiC SI-B-C; RESISTANCE
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: 22 Aug 2019 08:34
DOI: 10.1111/jace.16497
Official URL: https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/ja...
Projects: Research Fund of the National Key Research and Development Program of China, Grant Number 2017YFB0703200, National Natural Science Foundation of China, Grant Number 51821091, State Key Laboratory of Solidification Processing (NWPU), China, Grant Number 135-QP-2015, Fundamental Research Funds for the Central Universities, Grant Number 3102017zy058
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