Abstract: A method for preparing a plastic lapping disc overcoated with an abrasive silicon oxide layer. The method comprises the steps of introducing the silicon oxide precursors into an evacuated chamber containing the plastic lapping disc wherein a first major surface of the plastic disc is substantially covered during the glow deposition. The precursors are then subjected to a glow discharge. An abrasive silicon oxide layer is deposited on a second major surface of the disc opposite the first major surface.

Abstract: An improved method for preparing an abrasive SiO.sub.x coating wherein 1.ltoreq.x.ltoreq.2. The method includes the steps of submitting SiH.sub.4 and N.sub.2 O to glow discharge and depositing the SiO.sub.x product of the glow discharge onto a substrate. The improvement includes the additional step of adjusting the refractive index and thickness of the SiO.sub.x coating by means of the glow discharge deposition process parameters so as to maximize the abrasiveness of the SiO.sub.x coating.

Abstract: A method of preparing an abrasive silicon oxide coating on a substrate which includes glow discharging silane and N.sub.2 O in the presence of a substrate whereby a first silicon oxide layer having a refractive index of between about 1.0 and 1.2 as measured by ellipsometry is deposited. A second silicon oxide layer having a refractive index of between about 1.30 and 1.48 as measured by ellipsometry is glow discharge deposited onto the first layer.

Abstract: A method for preparing an abrasive SiO.sub.x coating, wherein 1.ltoreq..times..ltoreq.2, on a substrate by glow discharge deposition wherein the deposition on the substrate in a vacuum chamber is interrupted before the desired final SiO.sub.x coating thickness is obtained. SiH.sub.4 and N.sub.2 O are subjected to a glow discharge and SiO.sub.x is deposited onto the substrate. The deposition is interrupted, SiH.sub.4 is removed from the vacuum chamber and the SiO.sub.x coating is exposed to oxygen. These steps are repeated until the desired final SiO.sub.x coating thickness is obtained.

Abstract: A method for preparing an abrasive coating from silane and an oxygen-containing gaseous compound such as N.sub.2 O, CO.sub.2, H.sub.2 O and the like is disclosed. The abrasive coating is prepared using the glow discharge method. The coating may be used to lap submicron articles.

Abstract: Thin, stable, low surface energy perfluorinated polymer films can be applied to a substrate by glow discharging the substrate in the presence of a perfluorocycloalkane or -cycloolefin or perfluoroalkyl-substituted derivatives thereof.

Abstract: Methyl alkyl siloxanes can be employed as the dielectric coating on metallized video disc replicas when the metal surface on the disc has a high surface energy.

Abstract: This invention pertains to a method of depositing a silicon oxide, such as silicon dioxide, layer on a substrate by utilizing a glow discharge in oxygen and a dielectric precursor having the formula ##STR1## wherein x is an integer of 1 to 4 and each R is independently selected from the group consisting of H, --CH.sub.3, and --C.sub.2 H.sub.5.

Abstract: This invention relates to a video disc with a thin polymeric dielectric layer formed from acetylene and nitrogen in a glow discharge. The dielectric layer has improved age deterioration resistance and wear characteristics and can be prepared with low power levels.

Abstract: Improved perpendicular alignment can be imparted to nematic liquid crystal cells by coating the cell walls with a perfluorinated polymer applied to the cell walls by glow discharge in the presence of a perfluorinated monomer. The coated cell walls are thermally stable at least up to about 525.degree. C.

Abstract: This invention relates to a video disc with a thin polymeric dielectric layer formed from styrene and nitrogen. The dielectric layer has improved age deterioration resistance, wear characteristics and adhesion to a metal conductive layer.