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.
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.
Crackle techniques are most often applied to represent an aged effect. A crackle effect can also be applied for interesting texture and backgrounds, and applied to mimic organic forms like tree bark.