Abstract
This study examined theSiO2 gas present in the coatings used in corrosion industry.These layers have been created by physical vapor deposition (PVD), with an appropriate performance. Sublimation of SiO2is used to protect PVD aluminum flakes from water corrosionand to generate highly porous SiO2 flakes with holes in the nanometer range. SiOx/Al/SiOx sandwiches were made as well as Ag loaded porous SiO2 as antimicrobial filler.
Highlights
Popular liquid metal colors require the use of mirror-like aluminum pigment manufactured in a high vacuum process, i.e. physical vapor deposition(PVD).This equipment consists of an arc with a diameter of just a few microns running over the solid, metallic coating material, causing it to evaporate
Transparent coatings have been developed for the corrosion protection of aluminum alloys, based on commercially available, aqueous SiOx nano dispersions coatings
A high vacuum process to sandwich PVD Al between two SiOx layers made by SiO2 sublimation has been investigated in an attempt to protect PVD Al in water environment
Summary
Introduction Popular liquid metal colors require the use of mirror-like aluminum pigment manufactured in a high vacuum process, i.e. physical vapor deposition(PVD).This equipment consists of an arc with a diameter of just a few microns running over the solid, metallic coating material, causing it to evaporate. Despite their low thickness the resulting coatings show remarkable protective properties. Best optical reflectivity was achieved with flake thicknesses around 40 nanometers [1]. A high vacuum process to sandwich PVD Al between two SiOx layers made by SiO2 sublimation has been investigated in an attempt to protect PVD Al in water environment.
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