Removal Rate Model for Magnetorheological Finishing of Glass
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY
Magnetorheological finishing (MRF) is a deterministic subaperture polishing process. The process uses a magntorheological (MR) fluid that consists of micrometer-sized, spherical, magnetic carbonyl iron (CI) particles, nonmagnetic polishing abrasives, water, and stabilizers. Material removal occurs when the CI and nonmagnetic polishing abrasives shear material off the surface being polished. We introduce a new MRF material removal rate model for glass. This model contains terms for the near surface mechanical properties of glass, drag force, polishing abrasive size and concentration, chemical durability of the glass, MR fluid pH, and the glass composition. We introduce quantitative chemical predictors for the first time, to the best of our knowledge, into an MRF removal rate model. We validate individual terms in our model separately and then combine all of the terms to show the whole MRF material removal model compared with experimental data. All of our experimental data were obtained using nanodiamond MR fluids and a set of six optical glasses.
- Research Organization:
- Laboratory for Laser Energetics, University of Rochester
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC52-92SF19460
- OSTI ID:
- 919528
- Report Number(s):
- DOE/SF/19460-784; 2007-59; 1752
- Journal Information:
- Applied Optics, Journal Name: Applied Optics Journal Issue: 32 Vol. 46; ISSN APOPAI; ISSN 0003-6935
- Country of Publication:
- United States
- Language:
- English
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