Flame Spraying Of TiO2 Nanoparticles: Deposition Onto Glass Substrate

The present study analyses thermal spraying process with some variation from the traditional ones. Flame spraying of colloidal suspensions e/o microemulsions is a new way to prepare thin films of nanoparticles.​ The most interesting aspect is the possibility to spray a nanoparticles suspension instead of the powders avoiding the nanoparticles agglomerations and the consequences on the coating structure. This is possible thanks to surfactants that keep homogeneous the suspension with nanoparticles. In fact, the suspension is composed by, moreover the TiO2 nanoparticles to be deposed, other substances burned during the combustion, then the final coating composition presents an high purity level and is not influenced by other elements. Moreover it is possible to have a better control about the particle size, and it helps to improve the coating characteristics and properties.