颜修兴,段云彪,胡劲,吴家乐

• 1:昆明理工大学材料科学与工程学院

摘要(Abstract)：

以H62黄铜合金带材为原料，通过自由化学腐蚀去合金化法制备具有三维连续孔隙的纳米多孔铜材料。首先将样品进行抛光预处理，然后在60℃的0.5 mol·L~(-1) H_2SO_4溶液中进行不同时间的自由去合金化处理，研究不同反应时间对合金的去合金化程度、韧带尺寸和相组成的影响。使用扫描电镜、X射线衍射仪、光学显微镜和电化学工作站等表征合金的表面微观形貌、物相组成、显微组织和腐蚀极化曲线。结果表明：随着反应时间的延长，多孔铜的韧带尺寸逐渐变粗，由15 min时的150 nm粗化至60 min时的240 nm,孔隙率逐渐降低；在基体合金中出现纯铜相，合金基体中发生锌的脱出和铜原子的扩散并形成纳米多孔结构；统计韧带尺寸并拟合计算得到韧带粗化系数n为2.325,平均扩散系数D_s为3.117×10~(-15) m~2·s~(-1),与相关文献相比具有更快的扩散系数。

关键词(KeyWords)： 纳米多孔铜;去合金化法;铜锌合金;扩散系数;转变过程

Abstract:

Keywords:

基金项目(Foundation): 昆明理工大学分析测试基金(2022M20202230189)

作者(Author): 颜修兴,段云彪,胡劲,吴家乐

DOI: 10.13289/j.issn.1009-6264.2022-0642

参考文献(References)：

• [1] Zhu D,Xia C,Yang Z,et al.Fast electrodeposition of Ni/Ni(OH)2 nanoparticles on nanoporous Cu prepared by dealloying Zr-Cu amorphous alloy for supercapacitor application[J].Electrochimica Acta,2020,334:135591.
• [2] Lang X,Hirata A,Fujita T,et al.Nanoporous metal/oxide hybrid electrodes for electrochemical supercapacitors[J].Nature Nanotechnology,2011,6(4):232-236.
• [3] Mirzaee M,Dehghanian C.Preparation of dendritic nanoporous Ni-NiO foam by electrochemical dealloying for use in high-performance supercapacitors[J].Journal of Solid State Electrochemistry,2018,22(11):3639-3645.
• [4] Wang X,Wang W,Qi Z,et al.Fabrication,microstructure and electrocatalytic property of novel nanoporous palladium composites[J].Journal of Alloys and Compounds,2010,508(2):463-470.
• [5] Biener M M,Biener J,Wichmann A,et al.ALD functionalized nanoporous gold:Thermal stability,mechanical properties,and catalytic activity[J].Nano Letters,2011,11(8):3085-3090.
• [6] Qi Z,Weissmüller J.Hierarchical nested-network nanostructure by dealloying[J].ACS Nano,2013,7(7):5948-5954.
• [7] Ji L,Spanu D,Denisov N,et al.A dewetted-dealloyed nanoporous Pt Co-catalyst formed on TiO2 nanotube arrays leads to strongly enhanced photocatalytic H2 production[J].Chemistry-An Asian Journal,2020,15(2):301-309.
• [8] Itahara H,Sakamoto N,Arai T,et al.Dealloyed intermetallic Cu5Ca fine powders as nanoporous electrocatalysts for CO2 reduction[J].ACS Applied Nano Materials,2022,5(8):11991-11996.
• [9] Zhang D,Wang T,Zhang M,et al.Application of morphology and phase design of dealloying method in supercapacitor[J].Journal of Alloys and Compounds,2022,927:166974.
• [10] Li J,Hu S,Li Y,et al.Evolution mechanisms and kinetics of porous structures during chemical dealloying of binary alloys[J].Microporous and Mesoporous Materials,2021,320:111092.
• [11] Qiu H J,Peng L,Li X,et al.Using corrosion to fabricate various nanoporous metal structures[J].Corrosion Science,2015,92:16-31.
• [12] Weissmüller J,Newman R C,Jin H,et al.Nanoporous metals by alloy corrosion:formation and mechanical properties[J].MRS Bulletin,2009,34(8):577-586.
• [13] Jiang Z,Zhang J,Wang K,et al.A novel dealloying strategy for fabricating nanoporous Ag via zeta′-AgGa alloy[J].Nanotechnology,2022,33(19):195601.
• [14] Park B,Le Han D,Saito M,et al.Fabrication and characterization of nanoporous copper through chemical dealloying of cold-rolled and annealed Mn-Cu alloy[J].Journal of Porous Materials,2021,28(6):1823-1836.
• [15] Bhushan B,Murty B S,Mondal K.Dealloying kinetics and mechanism of porosity evolution in mechanically alloyed Ag25Zn75 powder particles[J].Corrosion Science,2018,139:155-162.
• [16] Qian L H,Chen M W.Ultrafine nanoporous gold by low-temperature dealloying and kinetics of nanopore formation[J].Applied Physics Letters,2007,91(8):83105.
• [17] Chen F,Chen X,Zou L,et al.Fabrication and mechanical behavior of bulk nanoporous Cu via chemical de-alloying of Cu-Al alloys[J].Materials Science and Engineering A,2016,660:241-250.
• [18] Zhang Z,Wang Y,Wang Y,et al.Formation of ultrafine nanoporous gold related to surface diffusion of gold adatoms during dealloying of Al2Au in an alkaline solution[J].Scripta Materialia,2010,62(3):137-140.
• [19] Hou C,Lang X,Han G,et al.Integrated solid/nanoporous copper/oxide hybrid bulk electrodes for high-performance lithium-ion batteries[J].Scientific Reports,2013,3(1):2878.
• [20] Kang J,Chen L,Hou Y,et al.Electroplated thick manganese oxide films with ultrahigh capacitance[J].Advanced Energy Materials,2013,3(7):857-863.
• [21] Egle T,Barroo C,Janvelyan N,et al.Multiscale morphology of nanoporous copper made from intermetallic phases[J].ACS Applied Materials & Interfaces,2017,9(30):25615-25622.
• [22] Yu Y,Chen W,Xie L,et al.Effect of heat treatment on microstructure evolution,phase transformation and mechanical properties of dual phase Cu-Zn alloy[J].Journal of Alloys and Compounds,2022,904:163960.
• [23] Shi Y,Yang W,Bai Q,et al.Alloying/dealloying mechanisms,microstructural modulation and mechanical properties of nanoporous silver via a liquid metal-assisted alloying/dealloying strategy[J].Journal of Alloys and Compounds,2021,872:159675.
• [24] Qin C,Zhang Y,Wang Z,et al.One-step synthesis of CuO@brass foil by dealloying method for low-cost flexible supercapacitor electrodes[J].Journal of Materials Science:Materials in Electronics,2016,27(9):9206-9215.
• [25] Zhao H,Lei D,He Y,et al.Compact 3D copper with uniform porous structure derived by electrochemical dealloying as dendrite-free lithium metal anode current collector[J].Advanced Energy Materials,2018,8(19):1800266.
• [26] Yun Q,He Y,Lv W,et al.Chemical dealloying derived 3D porous current collector for Li metal anodes[J].Advanced Materials,2016,28(32):6932-6939.
• [27] Zhang D,Dai A,Wu M,et al.Lithiophilic 3D porous CuZn current collector for stable lithium metal batteries[J].ACS Energy Letters,2020,5(1):180-186.
• [28] Erlebacher J.Mechanism of coarsening and bubble formation in high-genus nanoporous metals[J].Physical Review Letters,2011,106(22):225504.
• [29] Dursun A,Pugh D V,Corcoran S G.Dealloying of Ag-Au alloys in halide-containing electrolytes[J].Journal of The Electrochemical Society,2003,150(7):B355-B360.
• [30] Dona J M,Gonzalez-Velasco J.Mechanism of surface diffusion of gold adatoms in contact with an electrolytic solution[J].Journal of Physical Chemistry (1952),1993,97(18):4714-4719.
• [31] Song T,Gao Y,Zhang Z,et al.Influence of magnetic field on dealloying of Al-25Ag alloy and formation of nanoporous Ag[J].CrystEngComm,2012,14(10):3694-3701.
• [32] Wang Z,Liu J,Qin C,et al.Fabrication and new electrochemical properties of nanoporous Cu by dealloying amorphous Cu-Hf-Al alloys[J].Intermetallics,2015,56:48-55.

文章评论(Comment)：