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Microstructure and Mechanical Properties of HfC-SiC Ceramics Influenced by WC Addition

The development of HfC-SiC has been challenging due to difficulties in achieving sintering and satisfactory mechanical properties. However, this study aims to overcome these limitations by incorporating WC as an additive. SPS was employed to process HfC-SiC and HfC-SiC doped with 5 vol.% WC. The res...

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Autores principales: Cheng, Yue, Tang, Huaguo, Fang, Guangkai, Yu, Yuan, Wang, Lujie, Zhang, Yanfei, Qiao, Zhuhui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10179333/
https://www.ncbi.nlm.nih.gov/pubmed/37176219
http://dx.doi.org/10.3390/ma16093337
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author Cheng, Yue
Tang, Huaguo
Fang, Guangkai
Yu, Yuan
Wang, Lujie
Zhang, Yanfei
Qiao, Zhuhui
author_facet Cheng, Yue
Tang, Huaguo
Fang, Guangkai
Yu, Yuan
Wang, Lujie
Zhang, Yanfei
Qiao, Zhuhui
author_sort Cheng, Yue
collection PubMed
description The development of HfC-SiC has been challenging due to difficulties in achieving sintering and satisfactory mechanical properties. However, this study aims to overcome these limitations by incorporating WC as an additive. SPS was employed to process HfC-SiC and HfC-SiC doped with 5 vol.% WC. The resulting samples were then evaluated for their oxygen content, relative density, Vickers hardness, bending strength, indentation fracture toughness, and microstructure. The Vickers hardness (20.50 ± 0.20 GPa), flexural strength (600.19 ± 84.00 MPa), and indentation fracture toughness (5.76 ± 0.54 MPa·m(1/2)) of HfC-30 vol.% SiC-5 vol.% WC ceramics are higher than HfC-30 vol.% SiC ceramics. Doping 5 vol.% WC in HfC-30 vol.% SiC not only reduces the oxygen content of samples but also produces the (Hf,W)C solid solution and refines the microstructures, which are the main reasons for the higher mechanical properties of HfC-30 vol.% SiC-5 vol.% WC ceramics. In summary, this study successfully addresses the challenges associated with HfC-SiC by incorporating WC as an additive, leading to improved mechanical properties and microstructures.
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spelling pubmed-101793332023-05-13 Microstructure and Mechanical Properties of HfC-SiC Ceramics Influenced by WC Addition Cheng, Yue Tang, Huaguo Fang, Guangkai Yu, Yuan Wang, Lujie Zhang, Yanfei Qiao, Zhuhui Materials (Basel) Article The development of HfC-SiC has been challenging due to difficulties in achieving sintering and satisfactory mechanical properties. However, this study aims to overcome these limitations by incorporating WC as an additive. SPS was employed to process HfC-SiC and HfC-SiC doped with 5 vol.% WC. The resulting samples were then evaluated for their oxygen content, relative density, Vickers hardness, bending strength, indentation fracture toughness, and microstructure. The Vickers hardness (20.50 ± 0.20 GPa), flexural strength (600.19 ± 84.00 MPa), and indentation fracture toughness (5.76 ± 0.54 MPa·m(1/2)) of HfC-30 vol.% SiC-5 vol.% WC ceramics are higher than HfC-30 vol.% SiC ceramics. Doping 5 vol.% WC in HfC-30 vol.% SiC not only reduces the oxygen content of samples but also produces the (Hf,W)C solid solution and refines the microstructures, which are the main reasons for the higher mechanical properties of HfC-30 vol.% SiC-5 vol.% WC ceramics. In summary, this study successfully addresses the challenges associated with HfC-SiC by incorporating WC as an additive, leading to improved mechanical properties and microstructures. MDPI 2023-04-24 /pmc/articles/PMC10179333/ /pubmed/37176219 http://dx.doi.org/10.3390/ma16093337 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cheng, Yue
Tang, Huaguo
Fang, Guangkai
Yu, Yuan
Wang, Lujie
Zhang, Yanfei
Qiao, Zhuhui
Microstructure and Mechanical Properties of HfC-SiC Ceramics Influenced by WC Addition
title Microstructure and Mechanical Properties of HfC-SiC Ceramics Influenced by WC Addition
title_full Microstructure and Mechanical Properties of HfC-SiC Ceramics Influenced by WC Addition
title_fullStr Microstructure and Mechanical Properties of HfC-SiC Ceramics Influenced by WC Addition
title_full_unstemmed Microstructure and Mechanical Properties of HfC-SiC Ceramics Influenced by WC Addition
title_short Microstructure and Mechanical Properties of HfC-SiC Ceramics Influenced by WC Addition
title_sort microstructure and mechanical properties of hfc-sic ceramics influenced by wc addition
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10179333/
https://www.ncbi.nlm.nih.gov/pubmed/37176219
http://dx.doi.org/10.3390/ma16093337
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