Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering

Boron carbide (B(4)C) ceramics were synthesized by spark plasma sintering at a temperature between 1600 and 2050 °C without employing any sintering additives. The effect of sintering process parameters, such as temperature, holding time, pressure, hearting rate, and pulsed electric current, and the...

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Autores principales: Liu, Yingying, Ge, Sheng, Huang, Yihua, Huang, Zhengren, Zhang, Deku
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7956341/
https://www.ncbi.nlm.nih.gov/pubmed/33652926
http://dx.doi.org/10.3390/ma14051100
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author Liu, Yingying
Ge, Sheng
Huang, Yihua
Huang, Zhengren
Zhang, Deku
author_facet Liu, Yingying
Ge, Sheng
Huang, Yihua
Huang, Zhengren
Zhang, Deku
author_sort Liu, Yingying
collection PubMed
description Boron carbide (B(4)C) ceramics were synthesized by spark plasma sintering at a temperature between 1600 and 2050 °C without employing any sintering additives. The effect of sintering process parameters, such as temperature, holding time, pressure, hearting rate, and pulsed electric current, and the particle size of the raw powder on the densification behavior and mechanical properties of B(4)C ceramics, were comprehensively and systematically investigated. Hardness and fracture toughness of B(4)C that has a density close to the theoretical value were found to be 33.5 ± 0.2 GPa and 3.21 ± 0.13 MPa·m(1/2), respectively. Electron backscatter diffraction (EBSD) analysis revealed no abnormal growth of grains due to an increase in holding time and pressure. Twin structures present in ceramics are beneficial for their mechanical performance.
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spelling pubmed-79563412021-03-15 Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering Liu, Yingying Ge, Sheng Huang, Yihua Huang, Zhengren Zhang, Deku Materials (Basel) Article Boron carbide (B(4)C) ceramics were synthesized by spark plasma sintering at a temperature between 1600 and 2050 °C without employing any sintering additives. The effect of sintering process parameters, such as temperature, holding time, pressure, hearting rate, and pulsed electric current, and the particle size of the raw powder on the densification behavior and mechanical properties of B(4)C ceramics, were comprehensively and systematically investigated. Hardness and fracture toughness of B(4)C that has a density close to the theoretical value were found to be 33.5 ± 0.2 GPa and 3.21 ± 0.13 MPa·m(1/2), respectively. Electron backscatter diffraction (EBSD) analysis revealed no abnormal growth of grains due to an increase in holding time and pressure. Twin structures present in ceramics are beneficial for their mechanical performance. MDPI 2021-02-26 /pmc/articles/PMC7956341/ /pubmed/33652926 http://dx.doi.org/10.3390/ma14051100 Text en © 2021 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
Liu, Yingying
Ge, Sheng
Huang, Yihua
Huang, Zhengren
Zhang, Deku
Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering
title Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering
title_full Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering
title_fullStr Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering
title_full_unstemmed Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering
title_short Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering
title_sort influence of sintering process conditions on microstructural and mechanical properties of boron carbide ceramics synthesized by spark plasma sintering
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7956341/
https://www.ncbi.nlm.nih.gov/pubmed/33652926
http://dx.doi.org/10.3390/ma14051100
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