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Spark Plasma Sintering of AlN/Al Functionally Graded Materials
In this paper, six-layer AlN/Al gradient composites were prepared by a spark plasma sintering process to study the influences of sintering temperature and holding time on the microstructure and mechanical properties. The well-bonded interface enables the composite to exhibit excellent thermal and me...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8432733/ https://www.ncbi.nlm.nih.gov/pubmed/34500982 http://dx.doi.org/10.3390/ma14174893 |
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author | Xiu, Ziyang Ju, Boyu Liu, Saiyue Song, Yiwei Du, Jindan Li, Zhimin Zhou, Chang Yang, Wenshu Wu, Gaohui |
author_facet | Xiu, Ziyang Ju, Boyu Liu, Saiyue Song, Yiwei Du, Jindan Li, Zhimin Zhou, Chang Yang, Wenshu Wu, Gaohui |
author_sort | Xiu, Ziyang |
collection | PubMed |
description | In this paper, six-layer AlN/Al gradient composites were prepared by a spark plasma sintering process to study the influences of sintering temperature and holding time on the microstructure and mechanical properties. The well-bonded interface enables the composite to exhibit excellent thermal and mechanical properties. The hardness and thermal expansion properties of the composite exhibit a gradient property. The hardness increased with the volume fraction of AlN while the CTE decreased as the volume fraction of AlN. The thermal expansion reaches the lowest value of 13–14 ppm/K, and the hardness reaches the maximum value of 1.25 GPa, when the target volume fraction of AlN is 45%. The simulation results show that this gradient material can effectively reduce the thermal stress caused by the mismatch of the thermal expansion coefficient as a transmitter and receiver (T/R) module. This paper attempts to provide experimental support for the preparation of gradient Al matrix composites. |
format | Online Article Text |
id | pubmed-8432733 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-84327332021-09-11 Spark Plasma Sintering of AlN/Al Functionally Graded Materials Xiu, Ziyang Ju, Boyu Liu, Saiyue Song, Yiwei Du, Jindan Li, Zhimin Zhou, Chang Yang, Wenshu Wu, Gaohui Materials (Basel) Article In this paper, six-layer AlN/Al gradient composites were prepared by a spark plasma sintering process to study the influences of sintering temperature and holding time on the microstructure and mechanical properties. The well-bonded interface enables the composite to exhibit excellent thermal and mechanical properties. The hardness and thermal expansion properties of the composite exhibit a gradient property. The hardness increased with the volume fraction of AlN while the CTE decreased as the volume fraction of AlN. The thermal expansion reaches the lowest value of 13–14 ppm/K, and the hardness reaches the maximum value of 1.25 GPa, when the target volume fraction of AlN is 45%. The simulation results show that this gradient material can effectively reduce the thermal stress caused by the mismatch of the thermal expansion coefficient as a transmitter and receiver (T/R) module. This paper attempts to provide experimental support for the preparation of gradient Al matrix composites. MDPI 2021-08-27 /pmc/articles/PMC8432733/ /pubmed/34500982 http://dx.doi.org/10.3390/ma14174893 Text en © 2021 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 Xiu, Ziyang Ju, Boyu Liu, Saiyue Song, Yiwei Du, Jindan Li, Zhimin Zhou, Chang Yang, Wenshu Wu, Gaohui Spark Plasma Sintering of AlN/Al Functionally Graded Materials |
title | Spark Plasma Sintering of AlN/Al Functionally Graded Materials |
title_full | Spark Plasma Sintering of AlN/Al Functionally Graded Materials |
title_fullStr | Spark Plasma Sintering of AlN/Al Functionally Graded Materials |
title_full_unstemmed | Spark Plasma Sintering of AlN/Al Functionally Graded Materials |
title_short | Spark Plasma Sintering of AlN/Al Functionally Graded Materials |
title_sort | spark plasma sintering of aln/al functionally graded materials |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8432733/ https://www.ncbi.nlm.nih.gov/pubmed/34500982 http://dx.doi.org/10.3390/ma14174893 |
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