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Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiC(f)/SiC(m) Composites
The influence of microstructure evolution on the dynamic mechanical properties, including storage modulus and internal friction, of the 2.5D SiC(f)/SiC(m) composites after high-temperature treatment (800 °C and 1400 °C) in the air was investigated by three-point bending vibration test. The effects o...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7795653/ https://www.ncbi.nlm.nih.gov/pubmed/33396241 http://dx.doi.org/10.3390/ma14010145 |
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author | Yang, Chenxi Wu, Jiejie Ditta, Allah Wu, Sujun Zhao, Zihua |
author_facet | Yang, Chenxi Wu, Jiejie Ditta, Allah Wu, Sujun Zhao, Zihua |
author_sort | Yang, Chenxi |
collection | PubMed |
description | The influence of microstructure evolution on the dynamic mechanical properties, including storage modulus and internal friction, of the 2.5D SiC(f)/SiC(m) composites after high-temperature treatment (800 °C and 1400 °C) in the air was investigated by three-point bending vibration test. The effects of test frequency and amplitude on storage modulus and internal friction were also evaluated. The results show that as-prepared samples have maximum storage modulus and internal friction. However, the composites treated at 800 °C in the air have the minimum storage modulus due to a large number of defects produced within the composite structure, and the composites treated at 1400 °C have the minimum internal friction due to the formation of α-cristobalite in the interface between the matrix and fibers, resulting in stronger interface bonding. With regard to test conditions, the storage modulus is sensitive to amplitude but not frequency; however, the internal friction is sensitive to both frequency because of anelasticity and amplitude due to the static hysteresis. |
format | Online Article Text |
id | pubmed-7795653 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77956532021-01-10 Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiC(f)/SiC(m) Composites Yang, Chenxi Wu, Jiejie Ditta, Allah Wu, Sujun Zhao, Zihua Materials (Basel) Article The influence of microstructure evolution on the dynamic mechanical properties, including storage modulus and internal friction, of the 2.5D SiC(f)/SiC(m) composites after high-temperature treatment (800 °C and 1400 °C) in the air was investigated by three-point bending vibration test. The effects of test frequency and amplitude on storage modulus and internal friction were also evaluated. The results show that as-prepared samples have maximum storage modulus and internal friction. However, the composites treated at 800 °C in the air have the minimum storage modulus due to a large number of defects produced within the composite structure, and the composites treated at 1400 °C have the minimum internal friction due to the formation of α-cristobalite in the interface between the matrix and fibers, resulting in stronger interface bonding. With regard to test conditions, the storage modulus is sensitive to amplitude but not frequency; however, the internal friction is sensitive to both frequency because of anelasticity and amplitude due to the static hysteresis. MDPI 2020-12-31 /pmc/articles/PMC7795653/ /pubmed/33396241 http://dx.doi.org/10.3390/ma14010145 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yang, Chenxi Wu, Jiejie Ditta, Allah Wu, Sujun Zhao, Zihua Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiC(f)/SiC(m) Composites |
title | Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiC(f)/SiC(m) Composites |
title_full | Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiC(f)/SiC(m) Composites |
title_fullStr | Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiC(f)/SiC(m) Composites |
title_full_unstemmed | Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiC(f)/SiC(m) Composites |
title_short | Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiC(f)/SiC(m) Composites |
title_sort | influence of high-temperature oxidation and test conditions on the dynamic mechanical properties of 2.5d sic(f)/sic(m) composites |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7795653/ https://www.ncbi.nlm.nih.gov/pubmed/33396241 http://dx.doi.org/10.3390/ma14010145 |
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