Fabrication and characterization of bulk nanoporous copper by dealloying Al–Cu alloy slices
Fabrication and characterization of bulk nanoporous copper by dealloying Al–Cu alloy slices
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DOI：
10.1016/j.corsci.2014.10.014
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发表时间：
2015
影响因子：
8.3
通讯作者：
Jie Li;H. Jiang;Nana Yu;Caixia Xu;H. Geng
中科院分区：
文献类型：
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作者：
Jie Li;H. Jiang;Nana Yu;Caixia Xu;H. Geng
通过将xAl（100−x）Cu（x= 60，70 at.%）NaOH溶液中的合金切片（10、20和30重量%）在自由腐蚀条件下。结果表明，Al-Cu合金薄片可以完全脱合金。Al 2Cu和AlCu的协同脱合金导致形成具有小尺寸通道的均匀NPC。α-Al和Al 2Cu的脱合金作用在NPC的形成中起着重要作用，NPC具有两种结构，即均匀的小尺寸韧带-通道结构和分级的大尺寸通道结构，这两种结构形成了层饼结构。
Bulk NPC (nanoporous copper) were fabricated by dealloyingxAl(100−x)Cu (x= 60, 70 at.%) alloy slices in NaOH solutions (10, 20 and 30 wt.%) under free corrosion conditions. The results show that Al–Cu alloy slices can be completely dealloyed. The synergetic dealloying of Al2Cu and AlCu results in the formation of uniform NPC with small-sized channels. The dealloying of α-Al and Al2Cu plays an important role in the formation of NPC with two kinds of structures of both small-sized uniform ligaments–channels and hierarchical skeleton-like (large-sized channels with highly porous walls) structure, and these two structures form layer-cake structure.