High thermal conductivity and mechanical properties of Si@Graphite/Aluminum nitride/aluminum composites for high-efficiency thermal management

被引：17
作者：
Fan, Rui [1 ]
Huang, Ying [1 ]
Han, Xiaopeng [1 ]
Peng, Xuanyi [1 ]
机构：
[1] Northwestern Polytech Univ, Sch Sci, MOE Key Lab Mat Phys & Chem Extraordinary Condit, Minist Educ, Xian 710072, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 858卷
关键词：
Si-coating; Graphite flakes; Thermal conductivity; Coefficient of thermal expansion;
D O I：
10.1016/j.jallcom.2020.157630
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
To obtain high performance composites for thermal management fields, we adopt a new route to prepare the graphite flakes (Gf)/aluminum (Al) composites via vacuum pressure infiltration process. In this study, aluminum nitride (AlN) particles were used as supporting particles to obtain infiltration pathways for the penetration of the molten Al matrix. Gf, starch, urea and AlN were mixed evenly in the mass ratio of 1: 0.035: 0.058: 0.3 and then sintered at 330 degrees C to prepare porous preforms. It was observed that these substances had excellent chemical compatibility using characterization equipment. The improvement of the thermal transfer and mechanical properties of the composites for silicon coating was also studied. When the volume fraction of graphite was about 54%, compared with the samples without coating, the samples with SiC coating displayed an excellent thermal conductivity (TC) of 467.8 W/m.K and a promising bending strength of 58.8 Mpa, which increased about 82.1 and 238.0%, respectively. The coefficient of thermal expansion (CTE) of composites also decreased about 23.3% from 2.19 x 10(-5) K-1 to 1.68 x 10(-5) K-1 from room temperature to 380 degrees C. (C) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页数：8
相关论文
共 59 条
[1]   Thermal conductivity and mechanical properties of flake graphite/copper composite with a boron carbide-boron nano-layer on graphite surface [J].
Bai, H. ;
Xue, C. ;
Lyu, J. L. ;
Li, J. ;
Chen, G. X. ;
Yu, J. H. ;
Lin, C. T. ;
Lv, D. J. ;
Xiong, L. M. .
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2018, 106 :42-51
[2]   In-situ synthesis of an Al composite reinforced with multi-scale Al12Mo, (Al, Zr, Si) and Al2O3 particles through a multi-stage reaction [J].
Bian, Yihan ;
Gao, Tong ;
Li, Zengqiang ;
Sun, Qianqian ;
Ma, Xia ;
Liu, Xiangfa .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 762
[3]   Influence of sintering process and interfacial bonding mechanism on the mechanical properties of MgO-C refractories [J].
Cao, Guilian ;
Deng, Chengji ;
Chen, Yang ;
Wang, Xing ;
Yu, Chao ;
Ding, Jun ;
Zhu, Hongxi ;
Peng, Nai .
CERAMICS INTERNATIONAL, 2020, 46 (10) :16860-16866
[4]   Layer by layer graphite film reinforced aluminum composites with an enhanced performance of thermal conduction in the thermal management applications [J].
Chang, Jing ;
Zhang, Qiang ;
Lin, Yingfei ;
Wu, Gaohui .
JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 742 :601-609
[5]   Comparison study of Fe-based matrix composites reinforced with Ti-coated and Mo-coated SiC particles [J].
Chang, Rui ;
Zang, Jianbing ;
Wang, Yanhui ;
Yu, Yiqing ;
Lu, Jing ;
Xu, Xipeng .
MATERIALS CHEMISTRY AND PHYSICS, 2018, 204 :154-162
[6]   Thermal Properties of Mg-Al/AlN Composites Fabricated by Powder Metallurgy [J].
Chen, Jie ;
Bao, Chong-Gao ;
Liu, Zhi-Wei ;
Sun, Ben-Shuang ;
Shu, Yong-Chun ;
Li, Qing-Kui .
ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2018, 31 (06) :641-649
[7]   Thermal and electrical properties of carbon nanotube-based epoxy composite materials [J].
Chen, Junjie ;
Yan, Longfei ;
Song, Wenya ;
Xu, Deguang .
MATERIALS RESEARCH EXPRESS, 2018, 5 (06)
[8]  
Chen Y., 2020, J EUR CERAM SOC
[9]   Effects of silicon powder content on the properties and interface bonding of nitrided Al2O3-C refractories [J].
Ding, Jun ;
Yu, Chao ;
Liu, Jianpeng ;
Deng, Chengji ;
Zhu, Hongxi .
MATERIALS CHEMISTRY AND PHYSICS, 2018, 206 :193-203
[10]   Low-temperature synthesis of nanocrystalline ZrC coatings on flake graphite by molten salts [J].
Ding, Jun ;
Guo, Ding ;
Deng, Chengji ;
Zhu, Hongxi ;
Yu, Chao .
APPLIED SURFACE SCIENCE, 2017, 407 :315-321
123456