Qed Technologies, Inc.

Qed Technologies International, Inc.

Marc Tricard

William Kordonski

An improved method for producing a thin layer having highly uniform thickness, which layer may be pre-coated on an undulating surface of a substrate element. A working layer of the material is formed having a thickness greater than the final thickness desired. An areal (XY) determination of working layer thickness is made by ellipsometry, laser interferometry, or x-ray diffraction, or other known means. A map of thicknesses to be removed from the free surface of the working layer is entered into the control system of a magnetorheological finishing apparatus. The working layer is mounted on a workpiece holder of the apparatus and correctly indexed to the machine. The machine then removes material by magnetorheological finishing as instructed by the control system to leave a residual layer having a very high degree of thickness uniformity at a nominal average thickness and a very high surface integrity.

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Fairport, NY, United States of America

Marc Tricard