SiC含量对铝基复合材料性能的影响

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (6): 2256-2261.

SiC含量对铝基复合材料性能的影响

王海涛^1,2, 林晨², 樊子民¹, 唐明强², 赵放², 乐晨², 陈义华², 黄源成²

1.西安科技大学材料科与工程学院,西安 710054;
2.泉州天智合金材料科技有限公司,泉州 362000

收稿日期:2023-11-21 修订日期:2024-01-09 出版日期:2024-06-15 发布日期:2024-06-18
通信作者: 樊子民,副教授。E-mail:fanzimin@126.com；林晨,工程师。E-mail:tzlinchen2015@163.com
作者简介:王海涛(1998—),男,硕士研究生。主要从事先进导热复合材料的研究。E-mail:vistawht@163.com

Effect of SiC Content on Properties of Aluminum Matrix Composite Materials

WANG Haitao^1,2, LIN Chen², FAN Zimin¹, TANG Mingqiang², ZHAO Fang², LE Chen², CHEN Yihua², HUANG Yuancheng²

1. College of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China;
2. TIZ Advanced Alloy Technology Co., Ltd., Quanzhou 362000, China

Received:2023-11-21 Revised:2024-01-09 Online:2024-06-15 Published:2024-06-18

摘要/Abstract

摘要： SiC增强铝基复合材料因具有高比强度、高导热与高耐磨等性能而被广泛应用于航空航天、电子封装与交通运输等领域。本文采用热压烧结法制备了SiC颗粒增强铝基复合材料,研究SiC含量对铝基复合材料微观组织及力学性能的影响。用X射线衍射、阿基米德排水法、洛氏硬度分析与三点抗弯法测定试样的物相组成、表观密度与力学性能,用SEM分析试样微观形貌,用激光闪射法测定导热系数。研究结果表明,随SiC颗粒体积分数从0%增加到60%,试样的硬度先增大后降低,在SiC体积分数为50%时达最大值,为90 HRB。试样的导热率先增加后降低,在SiC体积分数为30%时达到最大值,为324.05 W/(m·K)。随SiC体积分数增加,金属基体与增强体结合紧密,无明显孔隙。当SiC体积分数增加到60%,试样孔隙率增加,致密度降低,强度下降。

关键词: SiC_p/Al复合材料, 碳化硅含量, 表观密度, 硬度, 导热系数

Abstract: SiC reinforced aluminum matrix composites are widely used in aerospace, electronic packaging and transportation due to their high specific strength, high thermal conductivity and high wear resistance. In this paper, SiC particle reinforced aluminum matrix composites were prepared by hot pressing sintering. The effects of SiC content on the microstructure and mechanical properties of aluminum matrix composites were studied. The phase composition, apparent density and mechanical properties of the samples were determined by X-ray diffraction, Archimedes drainage method, Rockwell hardness analysis and three-point bending method. The microstructure of the samples was analyzed by SEM. The thermal conductivity was measured by laser flash method. The results show that the hardness of the samples increases first and then decreases with the increase of the volume fraction of SiC particles from 0% to 60%, and reaches the maximum value of 90 HRB when the volume fraction of SiC is 50%. The thermal conductivity of the samples increases first and then decreases, and reaches the maximum value of 324.05 W/(m·K) when the volume fraction of SiC is 30%. With the increase of SiC volume fraction, the metal matrix and the reinforcement are closely combined without obvious pores. When the volume fraction of SiC increases to 60%, the porosity of the samples increases, the consistency decreases, and the strength decreases.

Key words: SiC_p/Al composite, SiC content, apparent density, hardness, thermal conductivity

中图分类号:

TB333

王海涛, 林晨, 樊子民, 唐明强, 赵放, 乐晨, 陈义华, 黄源成. SiC含量对铝基复合材料性能的影响[J]. 硅酸盐通报, 2024, 43(6): 2256-2261.

WANG Haitao, LIN Chen, FAN Zimin, TANG Mingqiang, ZHAO Fang, LE Chen, CHEN Yihua, HUANG Yuancheng. Effect of SiC Content on Properties of Aluminum Matrix Composite Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(6): 2256-2261.

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