Zirconia-coated carbonyl-iron-particle-based magnetorheological fluid for polishing optical glasses and ceramics

Journal Article · Thu Dec 10 04:00:00 EST 2009 · Applied Optics

DOI:https://doi.org/10.1364/AO.48.006797· OSTI ID:22036433

Shafrir, Shai N; Romanofsky, Henry J; Skarlinski, Michael; Wang, Mimi; Miao, Chunlin; Salzman, Sivan; Chartier, Taylor; Mici, Joni; Lambropoulos, John C; Rui, Shen; Hong, Yang; Jacobs, Stephen D

We report on magnetorheological finishing (MRF) spotting experiments performed on glasses and ceramics using a zirconia-coated carbonyl-iron (CI)-particle-based magnetorheological (MR) fluid. The zirconia-coated magnetic CI particles were prepared via sol-gel synthesis in kilogram quantities. The coating layer was {approx}50-100 nm thick, faceted in surface structure, and well adhered. Coated particles showed long-term stability against aqueous corrosion. ''Free'' nanocrystalline zirconia polishing abrasives were cogenerated in the coating process, resulting in an abrasive-charged powder for MRF. A viable MR fluid was prepared simply by adding water. Spot polishing tests were performed on a variety of optical glasses and ceramics over a period of nearly three weeks with no signs of MR fluid degradation or corrosion. Stable material removal rates and smooth surfaces inside spots were obtained.

• OSTI ID: 22036433
• Journal Information: Applied Optics, Journal Name: Applied Optics Journal Issue: 35 Vol. 48; ISSN 0003-6935; ISSN APOPAI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMORPHOUS STATE
CARBONYLS
CERAMICS
CRYSTALS
FABRICATION
FLUIDS
GLASS
IRON
IRON COMPOUNDS
LAYERS
NANOSTRUCTURES
POLISHING
POWDERS
SOL-GEL PROCESS
STABILITY
SURFACE COATING
SURFACES
SYNTHESIS
TEXTURE
ZIRCONIUM OXIDES