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首页> 外文期刊>Materials Technology >Tailoring the thermophysical properties of porous SiC framework reinforced Al-Mg-Si composites by Si alloying content for thermal energy management
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Tailoring the thermophysical properties of porous SiC framework reinforced Al-Mg-Si composites by Si alloying content for thermal energy management

机译：Si合金化含量为热能管理剪裁多孔SiC框架增强Al-Mg-Si复合材料的热物理性能

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摘要

SiC/Al composite is a promising thermal energy management material. However, promoting the thermal conductivity (TC) and decreasing the coefficient of thermal expansion (CTE) of SiC/Al composite simultaneously is a big challenge. Herein, three-dimensional (3D) porous SiC ceramic framework reinforced Al-Mg-Si alloy composites were prepared by spontaneous infiltration. The effects of Si alloying content on the phase composition, microstructure and themophysical properties of the composites were investigated. The results indicate that the increase of Si alloying content can not only inhibit the formation of Al4C3 effectively, but also increase the concentrations and particle sizes of second phases including Mg2Si and Si in infiltrated Al alloy. Consequently, the themophysical properties of the composites can be tailored by the Si alloying content. The composite with Si alloying content of 12 wt.% exhibits the superior themophysical properties with TC of 176.3 W center dot m(-1)center dot K-1 and CTE of 9.12 x 10(-6) K-1.
机译：SiC / Al Composite是一个有前途的热能管理材料。然而，促进导热率（Tc）并同时降低SiC / Al复合材料的热膨胀系数（CTE）是一个很大的挑战。这里，通过自发浸润制备三维（3D）多孔SiC陶瓷框架增强的Al-Mg-Si合金复合材料。研究了Si合金化含量对复合材料的相成分，微观结构和主体性质的影响。结果表明，Si合金化含量的增加不仅可以有效地抑制Al4C3的形成，而且还增加了在渗透的Al合金中包括Mg2Si和Si的第二阶段的浓度和颗粒尺寸。因此，复合材料的主体物理性质可以通过Si合金化含量来定制。具有12重量％的Si合金化含量的复合物。％的优异题为TC的优异题目，176.3W中心点M（-1）中心点K-1和CTE为9.12×10（-6）K-1。

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  • 来源
    《Materials Technology》 |2020年第12期|共6页
  • 作者

    Zhang Zhejian; Yuan Yuan; Xie Wenqi; Deng Yuchen; Wei Zhilei; Liu Dangui; Shi Zhongqi;

  • 作者单位

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Shaanxi Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

    SiC; Al composites; thermal energy management; alloy; themophysical properties; microstructure;

    机译：SiC;Al Composites;热能管理;合金;主题物理学性质;微观结构;

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