A noise is recognized as a component of industrial pollution especially in waterwaste transfer systems of commercial and residential property. It is also considered as an environmental issue that is a byproduct of technological development in modern society.
This material consists of pure copper containing ultrafine particles of aluminum oxide (10 nm ave size) which are uniformly dispersed in copper matrix. Aluminum oxide is produced by a process during which oxygen reacts with aluminum in copper lattice in the solid state.
This product is known as a Lead- acid battery expander containing nanoparticles and shows significantly improved qualitative parameters compare to conventional expanders.