Nanoporous metals by alloy corrosion
Contact: Jörg Weissmüller
Selective corrosion of solid solutions or intermetallic compounds has been known since ancient times, especially in the purification of noble metals and in the gilding of surfaces. More recently, it has been recognized and studied as an essential element of stress corrosion cracking. These studies are closely linked to the development of concepts such as the thermodynamics of non-equilibrium processes and percolation theory in the early 20th century. Only a few years ago, it was recognized that the products of alloy corrosion, namely macroscopic bodies made of nanoporous metal, are fascinating study objects in the nanosciences.
Our investigations aim to produce such materials with extremely small structure size while maintaining thermal and mechanical stability. By manipulating the surface properties, functional and structural materials with new properties can be produced.