国防科技大学学报Issue(1)：44-49,6.DOI:10.11887/j.cn.201601008
界面改性对 SiCp/Cu 复合材料导热性能的影响
Effect of interfacial modification on the thermo-physical property of SiCp/Cu composite
摘要
Abstract
The molybdenum coating was successfully deposited on the surface of silicon carbide by the magnetron sputtering method and the crystallized heat treatment process,and its surface morphology and chemical composition were analyzed.The SiCp /Cu composite was prepared by vacuum hot -pressing sintering,and the effects of the interfacial layer thickness on the thermal conductivity property were studied in detail.Results are as follows:molybdenum coating can be successfully deposited on the surface of silicon carbide by magnetron sputtering method,the roughness and the thickness of the film are enhanced with the sputter time postponed,and the molybdenum on the surface is in amorphous state.After the crystallized heat treatment,the molybdenum coating is in densification crystalline state.The sputtering time affects the thickness of the Mo coating and the thermal conductivity of SiCp /Cu obviously.With the time postponed,the thickness of the Mo coating is increased.And the thermal conductivity increases firstly and then decreases as the sputtering time increases.The thermal conductivity of the SiCp /Cu composite in 800 ℃crystallized heat treatment fabricated by the 9 h Mo coated SiC powders in 850 ℃ hot pressing can reach 274.056 W/(m·K)when the volume fraction of SiC is about 50%.关键词
SiCp /Cu 复合材料/界面改性/磁控溅射/热压烧结/热导率Key words
SiCp /Cu composite/surface modification/magnetron sputtering/hot pressing/thermal conductivity分类
通用工业技术引用本文复制引用
刘猛,白书欣,李顺,赵恂,熊德赣..界面改性对 SiCp/Cu 复合材料导热性能的影响[J].国防科技大学学报,2016,(1):44-49,6.基金项目
国防科技大学预研基金资助项目 （）
