Research on MR fluids applied to optical glass finishing

Magnetroheological fluids (MR fluids) are regarded as one of the intelligent materials and are widely used in many fields. MR fluids are adopted to the precision finishing of optical glass. The effect of carrier fluid, surfactant, magnetizable-particle, polishing abrasives and pH value on the finishing surface of optical glass is described. The component of MR fluids that is sitable for optical glass finishing is determined. On the basis of finishing mechanicsm of optical glass, a MR fluid is developed and is used to optical glass finishing. The finishing surface roughness Ra is 1.015 nm tested by an AFM.