Nanoporous surface fabricated on metal sheets by alloying/dealloying technique
Nanoporous surface fabricated on metal sheets by alloying/dealloying technique
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DOI：
10.1016/j.matlet.2010.07.046
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发表时间：
2010-11
影响因子：
3
通讯作者：
M. Hakamada;Y. Chino;M. Mabuchi
中科院分区：
文献类型：
--
作者：
M. Hakamada;Y. Chino;M. Mabuchi
采用包括堆垛轧制在内的合金化/脱合金技术在金片表面制备纳米多孔结构。在适当的条件下，生成厚度为150-250nm的纳米多孔表面层。样品在电解质 (HNO3) 中的长时间浸泡将纳米多孔结构的韧带尺寸增加至 41 nm。横截面观察表明，纳米多孔表面层可以无缝粘合到大块基底金上。通过电化学方法测量的真实表面积随着浸泡时间的延长而韧带尺寸的增加而减小。研究了表面积、韧带尺寸和体积收缩率之间的关系。
An alloying/dealloying technique including stacking rolling was used to fabricate nanoporous architecture on Au sheet surface. Under appropriate conditions, a nanoporous surface layer with a thickness of 150–250nm was generated. The extended immersion of the sample in the electrolyte (HNO3) increased the ligament size of the nanoporous architecture up to 41nm. Cross-sectional observations suggested that the nanoporous surface layer can be seamlessly bonded to the bulk substrate Au. True surface area, which was measured by an electrochemical method, decreased as ligament size increased by the extended immersion. The relationship among surface area, ligament size and volume shrinkage was investigated.