期刊
MATERIALS
卷 14, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/ma14071721
关键词
Al matrix composites; interfaces; thermal conductivity; carbide coating
类别
资金
- National Key R&D Program of China [2017YFB0703104]
This study successfully enhanced the interfacial thermal conductance of SiC@Graphite/Al and TiC@Graphite/Al composites by uniformly coating silicon carbide and titanium carbide coatings on the graphite surface. Additionally, the in-plane thermal conductivity of the composites with different volume fractions all exceeded 90% of the predicted values.
Graphite/Al composites had attracted significant attention for thermal management applications due to their excellent thermal properties. However, the improvement of thermal properties was restricted by the insufficient wettability between graphite and Al. In this study, silicon carbide and titanium carbide coatings have been uniformly coated on the graphite by the reactive sputtering method, and Graphite/Al laminate composites were fabricated by a hot isostatic pressing process to investigate the influence on thermal conductivity and mechanical properties. The results show that carbide coating can effectively improve the interfacial thermal conductance of SiC@Graphite/Al and TiC@Graphite/Al composites by 9.8 times and 3.4 times, respectively. After surface modification, the in-plane thermal conductivity (TC) of the composites with different volume fractions are all exceeding the 90% of the predictions. In comparison, SiC is more conducive to improving the thermal conductivity of composite materials, since the thermal conductivity of the 28.7 vol.% SiC@Graphite/Al reached the highest value of 499 W/m center dot K, while TiC is favorable for improving the mechanical properties. The finding is beneficial to the understanding of carbide coating engineering in the Graphite/Al composites.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据