The Influence of the Microstructure of Ceramic-Elastomer Composites on Their Energy Absorption Capability

The paper presents the experimental results of static and dynamic compressive tests conducted on ceramic-elastomer composites. The alumina ceramic preforms were fabricated by the four-step method: ceramic mixture preparation, consolidation under pressure, presintering, and sintering under pressure,...

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Autores principales:	Paulina Kozera, Anna Boczkowska, Rafał Kozera, Marcin Małek, Włodzimierz Idczak
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	interpenetrating phase composites ceramic preform static and dynamic tests specific surface fraction of the interphase boundaries energy absorption capability strain rate Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/b3831ec0b2ed4685b27edf511dffa71f
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spelling	oai:doaj.org-article:b3831ec0b2ed4685b27edf511dffa71f2021-11-11T18:09:05ZThe Influence of the Microstructure of Ceramic-Elastomer Composites on Their Energy Absorption Capability10.3390/ma142166181996-1944https://doaj.org/article/b3831ec0b2ed4685b27edf511dffa71f2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6618https://doaj.org/toc/1996-1944The paper presents the experimental results of static and dynamic compressive tests conducted on ceramic-elastomer composites. The alumina ceramic preforms were fabricated by the four-step method: ceramic mixture preparation, consolidation under pressure, presintering, and sintering under pressure, respectively. To obtain ceramic preforms with a similar volume fraction of open pores, but with different pore sizes, alumina powder with different particle size and a ceramic binder were used, as well as pore-forming agents that were evenly distributed throughout the volume of the molding mass. The composites were obtained using vacuum pressure infiltration of porous alumina ceramic by urea-urethane elastomer in liquid form. As a result, the obtained composites were characterized by two phases that interpenetrated three-dimensionally and topologically throughout the microstructure. The microstructure of the ceramic preforms was revealed by X-ray tomography, which indicated that the alumina preforms had similar porosity of approximately 40% vol. but different pore diameter in the range of 6 to 34 µm. After composite fabrication, image analysis was carried out. Due to the microstructure of the ceramic preforms, the composites differed in the specific surface fraction of the interphase boundaries (S<sub>v</sub>). The highest value of the S<sub>v</sub> parameter was achieved for composite fabricated by infiltration method of using ceramic preform with the smallest pore size. Static and dynamic tests were carried out using different strain rate: 1.4·10<sup>−3</sup>, 7·10<sup>−2</sup>, 1.4·10<sup>−1</sup>, and 3·10<sup>3</sup> s<sup>−1</sup>. Compressive strength, stress at plateau zone, and absorbed energy were determined. It was found that the ceramic-elastomer composites’ ability to absorb energy depended on the specific surface fraction of the interphase boundaries and achieved a value between 15.3 MJ/m<sup>3</sup> in static test and 51.1 MJ/m<sup>3</sup> for dynamic strain rate.Paulina KozeraAnna BoczkowskaRafał KozeraMarcin MałekWłodzimierz IdczakMDPI AGarticleinterpenetrating phase compositesceramic preformstatic and dynamic testsspecific surface fraction of the interphase boundariesenergy absorption capabilitystrain rateTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6618, p 6618 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	interpenetrating phase composites ceramic preform static and dynamic tests specific surface fraction of the interphase boundaries energy absorption capability strain rate Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	interpenetrating phase composites ceramic preform static and dynamic tests specific surface fraction of the interphase boundaries energy absorption capability strain rate Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Paulina Kozera Anna Boczkowska Rafał Kozera Marcin Małek Włodzimierz Idczak The Influence of the Microstructure of Ceramic-Elastomer Composites on Their Energy Absorption Capability
description	The paper presents the experimental results of static and dynamic compressive tests conducted on ceramic-elastomer composites. The alumina ceramic preforms were fabricated by the four-step method: ceramic mixture preparation, consolidation under pressure, presintering, and sintering under pressure, respectively. To obtain ceramic preforms with a similar volume fraction of open pores, but with different pore sizes, alumina powder with different particle size and a ceramic binder were used, as well as pore-forming agents that were evenly distributed throughout the volume of the molding mass. The composites were obtained using vacuum pressure infiltration of porous alumina ceramic by urea-urethane elastomer in liquid form. As a result, the obtained composites were characterized by two phases that interpenetrated three-dimensionally and topologically throughout the microstructure. The microstructure of the ceramic preforms was revealed by X-ray tomography, which indicated that the alumina preforms had similar porosity of approximately 40% vol. but different pore diameter in the range of 6 to 34 µm. After composite fabrication, image analysis was carried out. Due to the microstructure of the ceramic preforms, the composites differed in the specific surface fraction of the interphase boundaries (S<sub>v</sub>). The highest value of the S<sub>v</sub> parameter was achieved for composite fabricated by infiltration method of using ceramic preform with the smallest pore size. Static and dynamic tests were carried out using different strain rate: 1.4·10<sup>−3</sup>, 7·10<sup>−2</sup>, 1.4·10<sup>−1</sup>, and 3·10<sup>3</sup> s<sup>−1</sup>. Compressive strength, stress at plateau zone, and absorbed energy were determined. It was found that the ceramic-elastomer composites’ ability to absorb energy depended on the specific surface fraction of the interphase boundaries and achieved a value between 15.3 MJ/m<sup>3</sup> in static test and 51.1 MJ/m<sup>3</sup> for dynamic strain rate.
format	article
author	Paulina Kozera Anna Boczkowska Rafał Kozera Marcin Małek Włodzimierz Idczak
author_facet	Paulina Kozera Anna Boczkowska Rafał Kozera Marcin Małek Włodzimierz Idczak
author_sort	Paulina Kozera
title	The Influence of the Microstructure of Ceramic-Elastomer Composites on Their Energy Absorption Capability
title_short	The Influence of the Microstructure of Ceramic-Elastomer Composites on Their Energy Absorption Capability
title_full	The Influence of the Microstructure of Ceramic-Elastomer Composites on Their Energy Absorption Capability
title_fullStr	The Influence of the Microstructure of Ceramic-Elastomer Composites on Their Energy Absorption Capability
title_full_unstemmed	The Influence of the Microstructure of Ceramic-Elastomer Composites on Their Energy Absorption Capability
title_sort	influence of the microstructure of ceramic-elastomer composites on their energy absorption capability
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b3831ec0b2ed4685b27edf511dffa71f
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The Influence of the Microstructure of Ceramic-Elastomer Composites on Their Energy Absorption Capability

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