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

doi:10.3390/ma14174893

Open AccessArticle

Spark Plasma Sintering of AlN/Al Functionally Graded Materials

by

Ziyang Xiu

^1,2,†,

Boyu Ju

^1,†,

Saiyue Liu

³,

Yiwei Song

⁴,

Jindan Du

⁴,

Zhimin Li

⁴,

Chang Zhou

^1,*,

Wenshu Yang

^1,*

and

Gaohui Wu

¹

School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

²

State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

³

Space Environment Simulation Research Infrastructure, Harbin Institute of Technology, Harbin 150001, China

⁴

Shanghai Research Institute of Radio Equipment, Shanghai 200090, China

^*

Authors to whom correspondence should be addressed.

^†

Ziyang Xiu and Boyu Ju contributed equally to this work and are co-first authors of the article.

Materials 2021, 14(17), 4893; https://doi.org/10.3390/ma14174893

Submission received: 30 July 2021 / Revised: 24 August 2021 / Accepted: 25 August 2021 / Published: 27 August 2021

(This article belongs to the Section Metals and Alloys)

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Abstract

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.

Keywords: AlN; spark plasma sintering; aluminium matrix composites; microstructure

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MDPI and ACS Style

Xiu, Z.; Ju, B.; Liu, S.; Song, Y.; Du, J.; Li, Z.; Zhou, C.; Yang, W.; Wu, G. Spark Plasma Sintering of AlN/Al Functionally Graded Materials. Materials 2021, 14, 4893. https://doi.org/10.3390/ma14174893

AMA Style

Xiu Z, Ju B, Liu S, Song Y, Du J, Li Z, Zhou C, Yang W, Wu G. Spark Plasma Sintering of AlN/Al Functionally Graded Materials. Materials. 2021; 14(17):4893. https://doi.org/10.3390/ma14174893

Chicago/Turabian Style

Xiu, Ziyang, Boyu Ju, Saiyue Liu, Yiwei Song, Jindan Du, Zhimin Li, Chang Zhou, Wenshu Yang, and Gaohui Wu. 2021. "Spark Plasma Sintering of AlN/Al Functionally Graded Materials" Materials 14, no. 17: 4893. https://doi.org/10.3390/ma14174893

APA Style

Xiu, Z., Ju, B., Liu, S., Song, Y., Du, J., Li, Z., Zhou, C., Yang, W., & Wu, G. (2021). Spark Plasma Sintering of AlN/Al Functionally Graded Materials. Materials, 14(17), 4893. https://doi.org/10.3390/ma14174893

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