Fabrication of nanoporous copper surface by leaching of chill-zone Cu–Zr–Hf alloys

Daria Barsuk , Min Zhang (1) , Nikolaos T. Panagiotopoulos , Alberto M. Jorge , Konstantinos Georgarakis (2) , Alain R. Yavari (2)

1 Food Science
2 SIMaP - Science et Ingénierie des Matériaux et Procédés

In present work we report the synthesis of nanoporous surface using a copper-based alloy via leaching the less noble element-rich phase out of nanostructured ternary Cu-Hf-Zr alloys. The removal of Hf and Zr by mixed acid etchants in the chill-zone region of rapidly solidified ingots leads to the formation of a nano-roughened surface layer constituted of copper. The average pore and grain size of the obtained structure were shown to be less than 100 nm and 50 nm respectively.

Domaines: Sciences de l'ingénieur [physics]

Daria Barsuk, Min Zhang, Nikolaos T. Panagiotopoulos, Alberto M. Jorge, Konstantinos Georgarakis, et al.. Fabrication of nanoporous copper surface by leaching of chill-zone Cu–Zr–Hf alloys. Scripta Materialia, 2015, 104, pp.64-66. ⟨10.1016/j.scriptamat.2015.03.026⟩. ⟨hal-01216771⟩