Effect of the Rheological Properties of a Dispersed System on the Polishing Indicators of Optical Glass and Glass Ceramics

The study of the regularities of the polishing of optical glass and glass ceramics showed that the coefficient of surface tension, the coefficient of dynamic viscosity of the polishing dispersed system, and the contact angles of the surfaces of the treated surface and lapping tool affect the thickness of the gap between them and, accordingly, the productivity of removing the processed material and the roughness parameters of the treated surfaces. The energy transfer is directly related to the coefficient of volumetric wear, which determines the productivity of polishing. The validity of the ratio between the coefficients of volumetric wear and thermal diffusivity, depending on the specific heat capacity, transfer energy, and temperature, is confirmed. An increase in the thickness of the gap between the treated surface and the lapping tool leads to a decrease in the most probable size of sludge particles and an improvement in the roughness of polished surfaces.