Formation of a nanoporous layer on the surface of silver and copper by dealloying of thermal diffusion coatings Me5Zn8(Me=Ag, Cu) in a deep eutectic solvent

Autor: Kondina, A. I., Rozhentsev, D. A., Shurov, N. I., Tkachev, N. K.
Zdroj: Surface Engineering; February 2023, Vol. 39 Issue: 2 p198-203, 6p
Abstrakt: Selective anodic dissolution of pre-galvanized surfaces was used to obtain nano-porous layers of approximately 10 microns thick on copper and silver specimens. To achieve single-phase homogeneous thermal diffusion layers of Cu5Zn8and Ag5Zn8, we used a zinc plating process carried out in molten eutectic (KCl–NaCl–ZnCl2) at ? = 370°?. Dealloying of these coatings in a deep eutectic solvent (choline chloride/urea + 0.1 mol/l ZnCl2) at T = 133°C produced a typical bi-continuous structure of pores and ligaments (100 nm) on the surface of the silver and the copper.
Databáze: Supplemental Index