Colloidal silica will reduce magnetic losses when used as a binder in insulation coatings and increase efficiency in electrical steel applications. Colloidal silica also increases the adhesion of insulation coatings to the metal substrate and produces a more controllable coating slurry viscosity.
For health and safety reasons, there has been a movement away from using hexavalent chrome (Cr VI) in electroplating processes. Until recently Cr III-based films could not match the performance of Cr VI-based films, at least in terms of corrosion protection and self-healing characteristics.
But things have changed thanks to colloidal silica. Colloidal silica has been found to improve the performance of Cr III to near Cr VI standards with the extra benefit of ionic stabilization without adversely affecting bath performance.
For zinc-rich and shop-primer coatings, colloidal silica is an excellent binder for producing mechanically stronger coatings that possess excellent welding properties, as well as resisting damage and corrosion. These protective coatings provide ideal protection for steel used in construction.
Contact us for advice on how you can improve the efficiency of your application with Levasil Colloidal Silica.