Effect of porosity on thermal conductivity of SiCp/Al composites

被引：0

作者：

Zhou, Xian-Liang ^{[1
]}

Wu, Kai-Yang ^{[1
]}

Zou, Ai-Hua ^{[1
,2
]}

Hua, Xiao-Zhen ^{[1
]}

Que, Yu-Long ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Nanchang HangKong University, Nanchang, China

[2] School of Materials Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China

来源：

Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | 2015年 / 36卷 / 07期

关键词：

Composite materials - Numerical models - Porosity - Thermal conductivity;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

SiCp/Al composite materials with different porosity were prepared by pressureless infiltration process. The effects of porosity on thermal conductivity of the composites were examined by finite element method and experimental measurement, and the results were compared with calculatiaon values by MEMA model. The results indicate that the composite materials containing 2.8%-9.4% porosity can be prepared by changing the pressureless infiltration temperature and time. Finite element numerical simulation shows that the thermal conductivity of the composites decreases rapidly with increasing porosity to 6% and then the decreasing slows down for further increasing the porosity. The thermal conductivity by finite element numerical simulation is in agreement with the experimental results. With the increase of porosity, larger deviation between the calculation values by MEMA model and finite element simulation values is observed for the thermal conductivity. ©, 2015, Editorial Office of Transactions of Materials and Heat Treatment. All right reserved.

引用

页码：236 / 240