钎焊用泡沫铜/非晶碳中间层制备及性能研究
Research on the Fabrication and Properties of Copper Foam/Amorphous Carbon Composite Interlayer for Brazing Welding
- 2025年55卷第10期 页码:86-95
收稿:2025-08-28,
纸质出版:2025-10-20
DOI: 10.7512/j.issn.1001-2303.2025.10.10
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收稿:2025-08-28,
纸质出版:2025-10-20
移动端阅览
为了使钎焊接头能够兼具力学强度与功能需求,研究了一种新的钎焊中间层设计方法。使用多巴胺预浸渍法配合快速焦耳热成功制备了泡沫铜/非晶碳复合材料,研究了通电时间对于泡沫铜/非晶碳复合材料的微观组织、耐腐蚀性能以及导热性能的影响,并对影响机制进行了分析。非晶碳的无序结构能够有效帮助泡沫铜对抗腐蚀介质的侵蚀,同时其在泡沫骨架表面形成的高速导热通道提高了泡沫铜的热导率。在通电时间为15 s时,泡沫铜表面生长的非晶碳层均匀且连续,同时具备最好的耐腐蚀性能和导热性能,相较于原始泡沫铜,热导率提高了约350%。使用优化的泡沫铜/非晶碳复合材料作为中间层辅助钎焊连接了AlN陶瓷和Cu,异质界面成形良好,整体构件的导热性能得到了提升。
Copper foam/amorphous carbon composites were successfully fabricated using dopamine pre-infiltration combined with rapid Joule heating. The effects of electrification time on the microstructure
corrosion resistance
and thermal conductivity of the composite materials were investigated
and the influence mechanisms were analyzed. The effects of electrification time on the microstructure
corrosion resistance
and thermal conductivity of copper foam/amorphous carbon composites were investigated. The disordered structure of amorphous carbon effectively enhanced the corrosion resistance of copper foam
while high-efficiency thermal conduction channels created on the foam skeleton surface simultaneously improved its thermal conductivity. When the electrification time was set to 15 s
a uniform and continuous amorphous carbon layer was formed on the copper foam surface
which exhibited optimal corrosion resistance and thermal conductivity. Compared to the original copper foam
the thermal conductivity increased by approximately 350%. The optimized copper foam/amorphous carbon composites were employed as a brazing interlayer for connecting AlN to Cu
achieving a well-defined heterogeneous interface with enhanced thermal conductivity. An innovative interlayer design method was investigated in this study
achieving dual enhancement of structural reliability and functional integration in brazed joints.
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