**3.1. The co-electrodeposition mechanisms**

Guglielmi demonstrated the mechanism of codeposition for the first time in 1972. The mechanism provides a fundamental insight of codeposition theory.[50] According to this model the entrapment of particles is based on various adsorption processes. This is a mathe‐ matical formulation of the influence of particle content and current density on the particle codeposition rate into the metal matrix excluding particle characteristics and hydrodynamic conditions.
