Application of Metal Spraying to the Construction of a High Voltage Condenser

In the construction of a high voltage condenser of the glass plate type it is necessary to coat relatively large areas (60 square yards in this case) with a smooth conducting layer well bonded to the glass. Spraying molten aluminum directly onto the surface was tried and found to give a suitable coating. A description of the commercial Metal-Spray apparatus will be given and samples of the sprayed glass presented. Such factors as preparation of the surface, spraying technique, adhesion of the film, electrical resistance of the coating, and the effect of the heat on the glass will be discussed