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采用快速凝固与去合金化相结合的方法制备纳米多孔铜,用XRD、SEM分析样品的相组成和微观形貌,研究前驱体Al-Cu合金成分对纳米多孔铜微观结构及Al2 Cu、AlCu协同性腐蚀的影响。结果表明:Cu原子分数为33%时,去合金化后形成具有双连续结构的纳米多孔铜;Cu原子分数为38%时,形成比表面积更高、更均匀细小的双连续结构纳米多孔铜,平均孔径尺寸约100～150 nm,平均系带尺寸约50～80 nm;Cu原子分数为43%时,形成了双连续结构的纳米多孔铜并在其中分散着纳米颗粒聚集体;Cu原子分数为50%时,形成了纳米颗粒聚集的纳米多孔铜。实验发现,Al2 Cu、AlCu腐蚀的协同作用对双连续结构的形貌有重要的影响。
The nano-porous copper was prepared by a combination of rapid solidification and de-alloying. The phase composition and microstructure of the samples were analyzed by XRD and SEM. The effects of the precursor Al-Cu alloy composition on the microstructure of porous copper and Al2 Cu and AlCu The impact of sexual erosion. The results show that when the atomic fraction of Cu is 33%, nano-porous copper with bicontinuous structure is formed after de-alloying. When the atomic fraction of Cu is 38%, the nano-porous copper with bicontinuous structure with higher specific surface area and more uniform microstructure is formed, The average pore size is about 100-150 nm and the average tether size is about 50-80 nm. When the atomic fraction of Cu is 43%, nano-porous copper with bicontinuous structure is formed and nano-aggregates are dispersed therein. The Cu atomic fraction is 50%, the formation of nanoparticle aggregation of nanoporous copper. It was found that the synergistic effect of Al2 Cu and AlCu corrosion has an important effect on the morphology of bicontinuous structure.