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添加铜网对片层石墨/Al复合材料热物理性能的影响
Authors
宁越洋
曾凡坤
+4 more
江南
童幸生
薛晨
马洪兵
Publication date
20 December 2018
Publisher
Abstract
使用盐浴法对片层石墨(GFs)进行表面镀Si处理,采用真空热压法制备片层石墨/Al复合材料(Si-GFs/Al)。向Si-GFs/Al复合材料中添加10vol%的铜网,研究了铜网对Si-GFs/Al复合材料热导率和力学性能的影响。使用SEM、聚焦离子束(FIB)和TEM对Si-GFs/Al复合材料的微观结构和微观界面进行表征,并分析了复合材料的断裂机制。结果表明,添加铜网使Si-GFs/Al复合材料内部出现了高聚集定向GFs带,形成高导热通道。当GFs体积分数为30vol%~40vol%时,Si-GFs/Al复合材料的热导率提升了约20%,弯曲强度提升了40%以上。当GFs体积分数为40vol%时,Si-GFs/Al复合材料热导率和弯曲强度同时达到一个优值,分别为512W/(m·K)和127MPa
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Last time updated on 27/12/2019