Proprietary Surface Treatements

In recent years a number of proprietary surface treatments have been introduced that combine both physical and chemical treatments.

SilicoaterTM This method has been mainly used with dental alloys, to improve adhesion to other materials. The sandblasted alloy is passed through an oxidizing flame into which a solution of tetraethoxysilane is injected. This results in a layer of silica embedded in the surface of the alloy. After cooling the surface is then treated with a solution of an organosilane coupling agent. The functionalized alloy surface is ready for adhesive bonding.

ATmaPTM This method is suggested for use with a variety of materials such as plastics, glass and metals. The surface to be treated is passed through a flame with a controlled amount of oxygen into which a solution of a diamine is injected. The vaporized solution produces a number of reactive species in the flame that impinge on the surface resulting in hydroxyl, carboxyl, and nitrogen species being chemically bonded to the surface. The functionalized surface enhances adhesion, immediately after treatment, or, after storage for several months.

RocatecTM This is a tribochemical method for functionalizing surfaces that has been used mainly for dental applications. The part to be treated is first cleaned then blasted with aluminum oxide that has been treated with a surface layer of silica. After impact some of the silica is embedded in the surface. The surface is then treated with a solution of an organosilane coupling agent to give a functionalized surface ready for adhesive bonding.