کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1469362 | 1510028 | 2013 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Nucleation and growth of nanoporous copper ligaments during electrochemical dealloying of Mg-based metallic glasses Nucleation and growth of nanoporous copper ligaments during electrochemical dealloying of Mg-based metallic glasses](/preview/png/1469362.png)
Mg90−xCuxY10 glassy precursors have been used to synthesize nanoporous copper (NPC) by electrochemical dealloying in H2SO4 aqueous solution. The formation mechanism of NPC during electrochemical dealloying of Mg90−xCuxY10 metallic glasses is mainly governed by dissolution and diffusion processes at the precursor/solution interfaces. A diffusion growth model was provided to reveal a quantitative relationship between the ligament size and the dealloying conditions. The ligament size of NPC shows a linear correlation with Cu content in the glassy precursors. Moreover, the ligaments can be significantly coarsened with prolongation of leaching time or elevation of leaching temperature.
► The synthesis of nanoporous copper out of Mg90−xCuxY10 glassy alloys is reported.
► An approach of tailoring the microstructure of nanoporous copper is derived.
► The formation mechanism of nanoporous copper out of glassy alloys is clarified.
► Metallic glasses emerge as attractive precursors for synthesizing nanoporous metals.
Journal: Corrosion Science - Volume 67, February 2013, Pages 100–108