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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...

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Autores principales: Xiu, Ziyang, Ju, Boyu, Liu, Saiyue, Song, Yiwei, Du, Jindan, Li, Zhimin, Zhou, Chang, Yang, Wenshu, Wu, Gaohui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
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.
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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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