Research on the Fabrication and Properties of Copper Foam/Amorphous Carbon Composite Interlayer for Brazing Welding

QI Junlei; YE Zhenyu; XIA Yong; WANG Bin; YAN Yaotian; CAO Jian

doi:10.7512/j.issn.1001-2303.2025.10.10

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Research on the Fabrication and Properties of Copper Foam/Amorphous Carbon Composite Interlayer for Brazing Welding
Vol. 55, Issue 10, Pages: 86-95(2025)
Received：28 August 2025，

Published：20 October 2025
DOI： 10.7512/j.issn.1001-2303.2025.10.10
稿件说明：

移动端阅览

亓钧雷，叶振宇，夏勇，等.钎焊用泡沫铜/非晶碳中间层制备及性能研究［J］.电焊机，2025，55（10）：86-95. DOI： 10.7512/j.issn.1001-2303.2025.10.10.

QI Junlei, YE Zhenyu, XIA Yong, et al.Research on the Fabrication and Properties of Copper Foam/Amorphous Carbon Composite Interlayer for Brazing Welding[J].Electric Welding Machine, 2025, 55(10): 86-95. DOI： 10.7512/j.issn.1001-2303.2025.10.10.

摘要

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。

Abstract

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.

关键词

Keywords

references

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